TY  - JOUR
AU  - Pajcin, Miroslav P.
AU  - Simonović, Aleksandar
AU  - Ivanov, Toni
AU  - Komarov, Dragan
AU  - Stupar, Slobodan
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2599
AB  - Computational fluid dynamics computations for two hypersonic flow cases using the commercial ANSYS FLUENT 16.2 CFD software were done. In this paper, an internal and external hypersonic flow cases were considered and analysis of the hypersonic flow using different turbulence viscosity models available in ANSYS FLUENT 16.2 as well as the laminar viscosity model were done. The obtained results were after compared and commented upon.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Numerical analysis of a hypersonic turbulent and laminar flow using a commercial cfd solver
EP  - S807
SP  - S795
VL  - 21
DO  - 10.2298/TSCI160518198P
ER  - 

@article{
author = "Pajcin, Miroslav P. and Simonović, Aleksandar and Ivanov, Toni and Komarov, Dragan and Stupar, Slobodan",
year = "2017",
abstract = "Computational fluid dynamics computations for two hypersonic flow cases using the commercial ANSYS FLUENT 16.2 CFD software were done. In this paper, an internal and external hypersonic flow cases were considered and analysis of the hypersonic flow using different turbulence viscosity models available in ANSYS FLUENT 16.2 as well as the laminar viscosity model were done. The obtained results were after compared and commented upon.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Numerical analysis of a hypersonic turbulent and laminar flow using a commercial cfd solver",
pages = "S807-S795",
volume = "21",
doi = "10.2298/TSCI160518198P"
}

Pajcin, M. P., Simonović, A., Ivanov, T., Komarov, D.,& Stupar, S.. (2017). Numerical analysis of a hypersonic turbulent and laminar flow using a commercial cfd solver. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 21, S795-S807.
https://doi.org/10.2298/TSCI160518198P

Pajcin MP, Simonović A, Ivanov T, Komarov D, Stupar S. Numerical analysis of a hypersonic turbulent and laminar flow using a commercial cfd solver. in Thermal Science. 2017;21:S795-S807.
doi:10.2298/TSCI160518198P .

Pajcin, Miroslav P., Simonović, Aleksandar, Ivanov, Toni, Komarov, Dragan, Stupar, Slobodan, "Numerical analysis of a hypersonic turbulent and laminar flow using a commercial cfd solver" in Thermal Science, 21 (2017):S795-S807,
https://doi.org/10.2298/TSCI160518198P . .

TY  - JOUR
AU  - Trivković, Zorana
AU  - Svorcan, Jelena
AU  - Baltić, Marija
AU  - Komarov, Dragan
AU  - Fotev, Vasko
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2277
AB  - Numerička analiza izolovanog, reprezentativnog glavnog rotora helikoptera izvršena je u komercijalnom softverskom paketu ANSYS FLUENT 16.2. Generalno, strujna slika oko rotora je nestacionarna, trodimenzionalna, složena i vrtložna. Takve simulacije zahtevaju značajne proračunske resurse. Uticaj zemlje, koji poboljšava aerodinamičke performanse rotora, predstavlja dodatni izazov pri numeričkom modeliranju. U ovom radu strujno polje je izračunato Navije-Stoksovim jednačinama osrednjenim Rejnoldsovom statistikom (RANS). Rotaciono kretanje uzeto je u obzir primenom dva različita pristupa: 'Frame of reference' i 'Sliding mesh'. Izvršeno je poređenje dobijenih rezultata sa vrednostima jednostavnijih modela kao što su model zasnovan na zakonima održanja (MT) i kombinovani model segmenta lopatice (BEMT). Rezultati su predstavljenu u obliku kontura pritiska, brzine i vrtložnosti kao i vrednostima aerodinamičkih koeficijenata..
AB  - Numerical investigation of an isolated representative helicopter main rotor has been performed in ANSYS FLUENT 16.2. In general, flow field around the rotor is unsteady, three-dimensional, complex and vortical. Such a simulation requires substantial computational resources. Ground effect, which improves the aerodynamic performances of the rotor, represents an additional challenge to numerical modeling. In this study, flow field is computed by Unsteady Reynolds Averaged Navier- Stokes (URANS) equations. Both Frame of reference and Sliding mesh approaches were employed to model the rotor rotation. Obtained results are compared to results obtained by simpler, sufficiently reliable models such as Momentum Theory (MT) and Blade Element Momentum Theory (BEMT). Presented results include fluid flow visualizations in the form of pressure, velocity and vorticity contours and the values of aerodynamic coefficients.
PB  - Beograd : Vojnotehnički institut
T2  - Scientific Technical Review
T1  - Numerička analiza lopatica glavnog rotora helikoptera u blizini zemlje
T1  - Čislennyj analiz lopastej nesuščego vinta rotora vertoleta vblizi zemli / (francuski) Analyse numériques des aubes du rotor principal d'hélicoptère à proximité du sol
T1  - Computational analysis of helicopter main rotor blades in ground effect
EP  - 58
IS  - 4
SP  - 52
VL  - 66
DO  - 10.5937/STR1604052T
ER  - 

@article{
author = "Trivković, Zorana and Svorcan, Jelena and Baltić, Marija and Komarov, Dragan and Fotev, Vasko",
year = "2016",
abstract = "Numerička analiza izolovanog, reprezentativnog glavnog rotora helikoptera izvršena je u komercijalnom softverskom paketu ANSYS FLUENT 16.2. Generalno, strujna slika oko rotora je nestacionarna, trodimenzionalna, složena i vrtložna. Takve simulacije zahtevaju značajne proračunske resurse. Uticaj zemlje, koji poboljšava aerodinamičke performanse rotora, predstavlja dodatni izazov pri numeričkom modeliranju. U ovom radu strujno polje je izračunato Navije-Stoksovim jednačinama osrednjenim Rejnoldsovom statistikom (RANS). Rotaciono kretanje uzeto je u obzir primenom dva različita pristupa: 'Frame of reference' i 'Sliding mesh'. Izvršeno je poređenje dobijenih rezultata sa vrednostima jednostavnijih modela kao što su model zasnovan na zakonima održanja (MT) i kombinovani model segmenta lopatice (BEMT). Rezultati su predstavljenu u obliku kontura pritiska, brzine i vrtložnosti kao i vrednostima aerodinamičkih koeficijenata.., Numerical investigation of an isolated representative helicopter main rotor has been performed in ANSYS FLUENT 16.2. In general, flow field around the rotor is unsteady, three-dimensional, complex and vortical. Such a simulation requires substantial computational resources. Ground effect, which improves the aerodynamic performances of the rotor, represents an additional challenge to numerical modeling. In this study, flow field is computed by Unsteady Reynolds Averaged Navier- Stokes (URANS) equations. Both Frame of reference and Sliding mesh approaches were employed to model the rotor rotation. Obtained results are compared to results obtained by simpler, sufficiently reliable models such as Momentum Theory (MT) and Blade Element Momentum Theory (BEMT). Presented results include fluid flow visualizations in the form of pressure, velocity and vorticity contours and the values of aerodynamic coefficients.",
publisher = "Beograd : Vojnotehnički institut",
journal = "Scientific Technical Review",
title = "Numerička analiza lopatica glavnog rotora helikoptera u blizini zemlje, Čislennyj analiz lopastej nesuščego vinta rotora vertoleta vblizi zemli / (francuski) Analyse numériques des aubes du rotor principal d'hélicoptère à proximité du sol, Computational analysis of helicopter main rotor blades in ground effect",
pages = "58-52",
number = "4",
volume = "66",
doi = "10.5937/STR1604052T"
}

Trivković, Z., Svorcan, J., Baltić, M., Komarov, D.,& Fotev, V.. (2016). Numerička analiza lopatica glavnog rotora helikoptera u blizini zemlje. in Scientific Technical Review
Beograd : Vojnotehnički institut., 66(4), 52-58.
https://doi.org/10.5937/STR1604052T

Trivković Z, Svorcan J, Baltić M, Komarov D, Fotev V. Numerička analiza lopatica glavnog rotora helikoptera u blizini zemlje. in Scientific Technical Review. 2016;66(4):52-58.
doi:10.5937/STR1604052T .

Trivković, Zorana, Svorcan, Jelena, Baltić, Marija, Komarov, Dragan, Fotev, Vasko, "Numerička analiza lopatica glavnog rotora helikoptera u blizini zemlje" in Scientific Technical Review, 66, no. 4 (2016):52-58,
https://doi.org/10.5937/STR1604052T . .

TY  - CONF
AU  - Svorcan, Jelena
AU  - Damljanović, Dijana
AU  - Komarov, Dragan
AU  - Stupar, Slobodan
AU  - Petrović, Nebojša
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4306
AB  - Experimental investigation of transonic flow at Mach number of 0.84 around a subsonic/transonic transport calibration model ONERA M4 at four different angles-of-attack has been conducted in T-38 trisonic blow-down wind tunnel of the Serbian Military Technical Institute. Experimental results include relative pressure and pressure coefficient distributions along three wing sections. Obtained aerodynamic performance data present a good basis for CFD studies. Both experimental and numerical set-ups and processes are briefly described. Numerical simulations are performed in ANSYS FLUENT 16.2 with several different turbulence models employed. Two different sets of results are presented and compared. Pressure distribution along the wing surface, sonic bubble on the wing suction side and wingtip vortex have been investigated in more detail and presented in form of contours and iso-surfaces.
PB  - Belgrade : Military Technical Institute - VTI
C3  - Proceeddings / 7th International Scientific Conference on Defensive Technologies OTEH 2016
T1  - Numerical and experimental assessment of transonic turbulent flow around ONERA M4 model
EP  - 57
SP  - 52
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4306
ER  - 

@conference{
author = "Svorcan, Jelena and Damljanović, Dijana and Komarov, Dragan and Stupar, Slobodan and Petrović, Nebojša",
year = "2016",
abstract = "Experimental investigation of transonic flow at Mach number of 0.84 around a subsonic/transonic transport calibration model ONERA M4 at four different angles-of-attack has been conducted in T-38 trisonic blow-down wind tunnel of the Serbian Military Technical Institute. Experimental results include relative pressure and pressure coefficient distributions along three wing sections. Obtained aerodynamic performance data present a good basis for CFD studies. Both experimental and numerical set-ups and processes are briefly described. Numerical simulations are performed in ANSYS FLUENT 16.2 with several different turbulence models employed. Two different sets of results are presented and compared. Pressure distribution along the wing surface, sonic bubble on the wing suction side and wingtip vortex have been investigated in more detail and presented in form of contours and iso-surfaces.",
publisher = "Belgrade : Military Technical Institute - VTI",
journal = "Proceeddings / 7th International Scientific Conference on Defensive Technologies OTEH 2016",
title = "Numerical and experimental assessment of transonic turbulent flow around ONERA M4 model",
pages = "57-52",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4306"
}

Svorcan, J., Damljanović, D., Komarov, D., Stupar, S.,& Petrović, N.. (2016). Numerical and experimental assessment of transonic turbulent flow around ONERA M4 model. in Proceeddings / 7th International Scientific Conference on Defensive Technologies OTEH 2016
Belgrade : Military Technical Institute - VTI., 52-57.
https://hdl.handle.net/21.15107/rcub_machinery_4306

Svorcan J, Damljanović D, Komarov D, Stupar S, Petrović N. Numerical and experimental assessment of transonic turbulent flow around ONERA M4 model. in Proceeddings / 7th International Scientific Conference on Defensive Technologies OTEH 2016. 2016;:52-57.
https://hdl.handle.net/21.15107/rcub_machinery_4306 .

Svorcan, Jelena, Damljanović, Dijana, Komarov, Dragan, Stupar, Slobodan, Petrović, Nebojša, "Numerical and experimental assessment of transonic turbulent flow around ONERA M4 model" in Proceeddings / 7th International Scientific Conference on Defensive Technologies OTEH 2016 (2016):52-57,
https://hdl.handle.net/21.15107/rcub_machinery_4306 .

TY  - CONF
AU  - Ivanov, Toni
AU  - Fotev, Vasko
AU  - Petrović, Nebojša
AU  - Trivković, Zorana
AU  - Komarov, Dragan
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5436
AB  - Computational fluid dynamics (CFD) based on the finite volume method were used in order to obtain the aerodynamic characteristics of a jet nozzle. After the transient CFD results were gained the Ffowcs Williams-Hawking formulation for far-field noise modeling was used for aeroacoustic computation. A grid sensitivity was done and different turbulence models were tested. The obtained results were then compared with publicly available experimental data after which a conclusion was derived.
PB  - Military Technical Institute, Srbija
C3  - 7th International Scientific Conference od Defensive Technologies - OTEH 2016 - Proceedings
T1  - Aeroacoustic Analysis of a Jet Nozzle
EP  - 28
SP  - 24
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5436
ER  - 

@conference{
author = "Ivanov, Toni and Fotev, Vasko and Petrović, Nebojša and Trivković, Zorana and Komarov, Dragan",
year = "2016",
abstract = "Computational fluid dynamics (CFD) based on the finite volume method were used in order to obtain the aerodynamic characteristics of a jet nozzle. After the transient CFD results were gained the Ffowcs Williams-Hawking formulation for far-field noise modeling was used for aeroacoustic computation. A grid sensitivity was done and different turbulence models were tested. The obtained results were then compared with publicly available experimental data after which a conclusion was derived.",
publisher = "Military Technical Institute, Srbija",
journal = "7th International Scientific Conference od Defensive Technologies - OTEH 2016 - Proceedings",
title = "Aeroacoustic Analysis of a Jet Nozzle",
pages = "28-24",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5436"
}

Ivanov, T., Fotev, V., Petrović, N., Trivković, Z.,& Komarov, D.. (2016). Aeroacoustic Analysis of a Jet Nozzle. in 7th International Scientific Conference od Defensive Technologies - OTEH 2016 - Proceedings
Military Technical Institute, Srbija., 24-28.
https://hdl.handle.net/21.15107/rcub_machinery_5436

Ivanov T, Fotev V, Petrović N, Trivković Z, Komarov D. Aeroacoustic Analysis of a Jet Nozzle. in 7th International Scientific Conference od Defensive Technologies - OTEH 2016 - Proceedings. 2016;:24-28.
https://hdl.handle.net/21.15107/rcub_machinery_5436 .

Ivanov, Toni, Fotev, Vasko, Petrović, Nebojša, Trivković, Zorana, Komarov, Dragan, "Aeroacoustic Analysis of a Jet Nozzle" in 7th International Scientific Conference od Defensive Technologies - OTEH 2016 - Proceedings (2016):24-28,
https://hdl.handle.net/21.15107/rcub_machinery_5436 .

TY  - GEN
AU  - Svorcan, Jelena
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Komarov, Dragan
AU  - Ivanov, Toni
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4379
T2  - Универзитет у Београду - Машински факултет
T1  - Софтвер за прорачун перформанси и оптимизацију ветротурбина са вертикалном осом обртања
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4379
ER  - 

@misc{
author = "Svorcan, Jelena and Stupar, Slobodan and Simonović, Aleksandar and Komarov, Dragan and Ivanov, Toni",
year = "2015",
journal = "Универзитет у Београду - Машински факултет",
title = "Софтвер за прорачун перформанси и оптимизацију ветротурбина са вертикалном осом обртања",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4379"
}

Svorcan, J., Stupar, S., Simonović, A., Komarov, D.,& Ivanov, T.. (2015). Софтвер за прорачун перформанси и оптимизацију ветротурбина са вертикалном осом обртања. in Универзитет у Београду - Машински факултет.
https://hdl.handle.net/21.15107/rcub_machinery_4379

Svorcan J, Stupar S, Simonović A, Komarov D, Ivanov T. Софтвер за прорачун перформанси и оптимизацију ветротурбина са вертикалном осом обртања. in Универзитет у Београду - Машински факултет. 2015;.
https://hdl.handle.net/21.15107/rcub_machinery_4379 .

Svorcan, Jelena, Stupar, Slobodan, Simonović, Aleksandar, Komarov, Dragan, Ivanov, Toni, "Софтвер за прорачун перформанси и оптимизацију ветротурбина са вертикалном осом обртања" in Универзитет у Београду - Машински факултет (2015),
https://hdl.handle.net/21.15107/rcub_machinery_4379 .

TY  - CONF
AU  - Spasić, Dragoljub
AU  - Ivanov, Toni
AU  - Komarov, Dragan
AU  - Stupar, Slobodan
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6416
AB  - U ovom radu prikazan je postupak numeričkog i eksperimentalnog određivanja razloga otkazа zvezdastog separatora dvocevnog avionskog topa koji se desio tokom njegovog dejstva. Zone najveće koncentracije napona određene su metodom konačnih elemenata dok je eksperimentalna analiza otkaza (loma) izvršena ispitivanjem tvrdoće materijala kao i mikrofraktografskim i makrofraktografskim ispitivanjem polomljenog separatora. Takođe, na osnovu dobijenih rezultata izveden je zaključak i data je preporuka o tome šta je potrebno učiniti da bi se ovakvi i slični otkazi sprečili.
PB  - Uniiverzitet u Beogradu - Mašinski fakultet
C3  - Zbornik radova - 39. JUPITER konferencija / Proceedings - 39nd JUPITER Conference (26. CAD/CAM simpozijum)
T1  - Analiza otkaza zvezdastog separatora avionskog topa
EP  - 2.58
SP  - 2.53
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6416
ER  - 

@conference{
author = "Spasić, Dragoljub and Ivanov, Toni and Komarov, Dragan and Stupar, Slobodan",
year = "2014",
abstract = "U ovom radu prikazan je postupak numeričkog i eksperimentalnog određivanja razloga otkazа zvezdastog separatora dvocevnog avionskog topa koji se desio tokom njegovog dejstva. Zone najveće koncentracije napona određene su metodom konačnih elemenata dok je eksperimentalna analiza otkaza (loma) izvršena ispitivanjem tvrdoće materijala kao i mikrofraktografskim i makrofraktografskim ispitivanjem polomljenog separatora. Takođe, na osnovu dobijenih rezultata izveden je zaključak i data je preporuka o tome šta je potrebno učiniti da bi se ovakvi i slični otkazi sprečili.",
publisher = "Uniiverzitet u Beogradu - Mašinski fakultet",
journal = "Zbornik radova - 39. JUPITER konferencija / Proceedings - 39nd JUPITER Conference (26. CAD/CAM simpozijum)",
title = "Analiza otkaza zvezdastog separatora avionskog topa",
pages = "2.58-2.53",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6416"
}

Spasić, D., Ivanov, T., Komarov, D.,& Stupar, S.. (2014). Analiza otkaza zvezdastog separatora avionskog topa. in Zbornik radova - 39. JUPITER konferencija / Proceedings - 39nd JUPITER Conference (26. CAD/CAM simpozijum)
Uniiverzitet u Beogradu - Mašinski fakultet., 2.53-2.58.
https://hdl.handle.net/21.15107/rcub_machinery_6416

Spasić D, Ivanov T, Komarov D, Stupar S. Analiza otkaza zvezdastog separatora avionskog topa. in Zbornik radova - 39. JUPITER konferencija / Proceedings - 39nd JUPITER Conference (26. CAD/CAM simpozijum). 2014;:2.53-2.58.
https://hdl.handle.net/21.15107/rcub_machinery_6416 .

Spasić, Dragoljub, Ivanov, Toni, Komarov, Dragan, Stupar, Slobodan, "Analiza otkaza zvezdastog separatora avionskog topa" in Zbornik radova - 39. JUPITER konferencija / Proceedings - 39nd JUPITER Conference (26. CAD/CAM simpozijum) (2014):2.53-2.58,
https://hdl.handle.net/21.15107/rcub_machinery_6416 .

TY  - CONF
AU  - Svorcan, Jelena
AU  - Komarov, Dragan
AU  - Stupar, Slobodan
AU  - Posteljnik, Zorana
AU  - Stanojević, Marija
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4456
AB  - Transonic flow includes a number of unsteady fluid flow phenomena such as local separation regions, shock–boundary layer interaction, boundary layer transition and turbulence. In general, it is difficult to accurately simulate these phenomena since they require small length and time scales i.e. substantial computational resources. The principal goal of this study is to evaluate the capability and applicability of numerical simulations to predict the aerodynamic loads acting on a harmonically oscillating wing in transonic flow. Unsteady flow-fields around a three-dimensional
oscillating half-wing model were computed using a finite-volume Navier-Stokes numerical scheme with several widely used turbulence models. The base geometry corresponds to ONERA M6 wing. The effects of grid-density were examined and presented. Numerical results from the stationary model were compared to available experimental data (AGARD-AR-138). The computations were performed at free stream Mach number of 0.84 at variable angle-of-attack. The effects of pitching angle amplitude and oscillation frequency were also investigated. Presented results include fluid flow visualizations in the form of Mach number and pressure contours and the values of aerodynamic coefficients.
PB  - Belgrade : Military Technical Institute - VTI
C3  - 6th International scientific conference on defensive technologies OTEH 2014
T1  - Computational analysis of unsteady aerodynamic loads acting on an oscillating wing in transonic flow
EP  - 66
SP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4456
ER  - 

@conference{
author = "Svorcan, Jelena and Komarov, Dragan and Stupar, Slobodan and Posteljnik, Zorana and Stanojević, Marija",
year = "2014",
abstract = "Transonic flow includes a number of unsteady fluid flow phenomena such as local separation regions, shock–boundary layer interaction, boundary layer transition and turbulence. In general, it is difficult to accurately simulate these phenomena since they require small length and time scales i.e. substantial computational resources. The principal goal of this study is to evaluate the capability and applicability of numerical simulations to predict the aerodynamic loads acting on a harmonically oscillating wing in transonic flow. Unsteady flow-fields around a three-dimensional
oscillating half-wing model were computed using a finite-volume Navier-Stokes numerical scheme with several widely used turbulence models. The base geometry corresponds to ONERA M6 wing. The effects of grid-density were examined and presented. Numerical results from the stationary model were compared to available experimental data (AGARD-AR-138). The computations were performed at free stream Mach number of 0.84 at variable angle-of-attack. The effects of pitching angle amplitude and oscillation frequency were also investigated. Presented results include fluid flow visualizations in the form of Mach number and pressure contours and the values of aerodynamic coefficients.",
publisher = "Belgrade : Military Technical Institute - VTI",
journal = "6th International scientific conference on defensive technologies OTEH 2014",
title = "Computational analysis of unsteady aerodynamic loads acting on an oscillating wing in transonic flow",
pages = "66-61",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4456"
}

Svorcan, J., Komarov, D., Stupar, S., Posteljnik, Z.,& Stanojević, M.. (2014). Computational analysis of unsteady aerodynamic loads acting on an oscillating wing in transonic flow. in 6th International scientific conference on defensive technologies OTEH 2014
Belgrade : Military Technical Institute - VTI., 61-66.
https://hdl.handle.net/21.15107/rcub_machinery_4456

Svorcan J, Komarov D, Stupar S, Posteljnik Z, Stanojević M. Computational analysis of unsteady aerodynamic loads acting on an oscillating wing in transonic flow. in 6th International scientific conference on defensive technologies OTEH 2014. 2014;:61-66.
https://hdl.handle.net/21.15107/rcub_machinery_4456 .

Svorcan, Jelena, Komarov, Dragan, Stupar, Slobodan, Posteljnik, Zorana, Stanojević, Marija, "Computational analysis of unsteady aerodynamic loads acting on an oscillating wing in transonic flow" in 6th International scientific conference on defensive technologies OTEH 2014 (2014):61-66,
https://hdl.handle.net/21.15107/rcub_machinery_4456 .

TY  - CONF
AU  - Komarov, Dragan
AU  - Svorcan, Jelena
AU  - Isaković, Jovan
AU  - Bengin, Aleksandar
AU  - Ivanov, Toni
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4455
AB  - Experimental investigation of supersonic flow at Mach number of 2 around a finned ogive cylinder at angles-of-attack ranging from 0° to 16° has been conducted in T-38 trisonic blow-down wind tunnel of the Serbian Military Technical Institute. A short description of testing process and measuring equipment is given. Results of a comparison of experimental and numerical results, that primarily include aerodynamic coefficients and pressure distribution, are presented and discussed. Numerical simulations were performed in ANSYS FLUENT with three Reynolds Averaged Navier-Stokes turbulence models of different complexity. Both structured and unstructured grids were generated, tested and compared and the influence of their nature and size has been considered. Base flow at zero angle-of-attack has been investigated in more detail and the accuracy and applicability of the used models is discussed. Computed fluid flow is presented in the form of pressure coefficient and Mach number contours and velocity vectors.
PB  - Belgrade : Military Technical Institute - VTI
C3  - 6th International scientific conference on defensive technologies OTEH 2014
T1  - Numerical and experimental assessment of supersonic turbulent flow around a finned ogive cylinder
EP  - 60
SP  - 55
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4455
ER  - 

@conference{
author = "Komarov, Dragan and Svorcan, Jelena and Isaković, Jovan and Bengin, Aleksandar and Ivanov, Toni",
year = "2014",
abstract = "Experimental investigation of supersonic flow at Mach number of 2 around a finned ogive cylinder at angles-of-attack ranging from 0° to 16° has been conducted in T-38 trisonic blow-down wind tunnel of the Serbian Military Technical Institute. A short description of testing process and measuring equipment is given. Results of a comparison of experimental and numerical results, that primarily include aerodynamic coefficients and pressure distribution, are presented and discussed. Numerical simulations were performed in ANSYS FLUENT with three Reynolds Averaged Navier-Stokes turbulence models of different complexity. Both structured and unstructured grids were generated, tested and compared and the influence of their nature and size has been considered. Base flow at zero angle-of-attack has been investigated in more detail and the accuracy and applicability of the used models is discussed. Computed fluid flow is presented in the form of pressure coefficient and Mach number contours and velocity vectors.",
publisher = "Belgrade : Military Technical Institute - VTI",
journal = "6th International scientific conference on defensive technologies OTEH 2014",
title = "Numerical and experimental assessment of supersonic turbulent flow around a finned ogive cylinder",
pages = "60-55",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4455"
}

Komarov, D., Svorcan, J., Isaković, J., Bengin, A.,& Ivanov, T.. (2014). Numerical and experimental assessment of supersonic turbulent flow around a finned ogive cylinder. in 6th International scientific conference on defensive technologies OTEH 2014
Belgrade : Military Technical Institute - VTI., 55-60.
https://hdl.handle.net/21.15107/rcub_machinery_4455

Komarov D, Svorcan J, Isaković J, Bengin A, Ivanov T. Numerical and experimental assessment of supersonic turbulent flow around a finned ogive cylinder. in 6th International scientific conference on defensive technologies OTEH 2014. 2014;:55-60.
https://hdl.handle.net/21.15107/rcub_machinery_4455 .

Komarov, Dragan, Svorcan, Jelena, Isaković, Jovan, Bengin, Aleksandar, Ivanov, Toni, "Numerical and experimental assessment of supersonic turbulent flow around a finned ogive cylinder" in 6th International scientific conference on defensive technologies OTEH 2014 (2014):55-60,
https://hdl.handle.net/21.15107/rcub_machinery_4455 .

TY  - JOUR
AU  - Ivanov, Toni
AU  - Simonović, Aleksandar
AU  - Komarov, Dragan
AU  - Stupar, Slobodan
AU  - Petrović, Nebojša
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6417
AB  - Problem akustičkog zračenja vetroturbine bitan je za procenu uticaja vetroturbinu na životnu sredinu. Razumevanje mehanizama generisanja buke, te određivanje i merenje buke je stoga od izuzetnog značaja. U ovom radu prikazana je klasifi kacija buke vetroturbina, defi nisani su njeni izvori i načini prostiranja. Takođe predstavljene su različite metode proračunskog određivanja aerodinamičke buke i prikazani su neki od najznačajnijih radova iz ove oblasti. Date su procedure akustičkog merenja buke pri čemu je skrenuta pažnja na moguće probleme pri merenjima i na postojeće standarde. Kroz primere iz literature predstavljene su aktuelne metode ispitivanja aerodinamičke buke i dat je uvid u moguće pravce daljeg usavršavanja i unapređivanja.
PB  - Savez energetičara
T2  - Energija, ekonomija, ekologija
T1  - Metode određivanja aerodinamičke buke kod vetroturbina
EP  - 116
IS  - 1-2
SP  - 109
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6417
ER  - 

@article{
author = "Ivanov, Toni and Simonović, Aleksandar and Komarov, Dragan and Stupar, Slobodan and Petrović, Nebojša",
year = "2014",
abstract = "Problem akustičkog zračenja vetroturbine bitan je za procenu uticaja vetroturbinu na životnu sredinu. Razumevanje mehanizama generisanja buke, te određivanje i merenje buke je stoga od izuzetnog značaja. U ovom radu prikazana je klasifi kacija buke vetroturbina, defi nisani su njeni izvori i načini prostiranja. Takođe predstavljene su različite metode proračunskog određivanja aerodinamičke buke i prikazani su neki od najznačajnijih radova iz ove oblasti. Date su procedure akustičkog merenja buke pri čemu je skrenuta pažnja na moguće probleme pri merenjima i na postojeće standarde. Kroz primere iz literature predstavljene su aktuelne metode ispitivanja aerodinamičke buke i dat je uvid u moguće pravce daljeg usavršavanja i unapređivanja.",
publisher = "Savez energetičara",
journal = "Energija, ekonomija, ekologija",
title = "Metode određivanja aerodinamičke buke kod vetroturbina",
pages = "116-109",
number = "1-2",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6417"
}

Ivanov, T., Simonović, A., Komarov, D., Stupar, S.,& Petrović, N.. (2014). Metode određivanja aerodinamičke buke kod vetroturbina. in Energija, ekonomija, ekologija
Savez energetičara.(1-2), 109-116.
https://hdl.handle.net/21.15107/rcub_machinery_6417

Ivanov T, Simonović A, Komarov D, Stupar S, Petrović N. Metode određivanja aerodinamičke buke kod vetroturbina. in Energija, ekonomija, ekologija. 2014;(1-2):109-116.
https://hdl.handle.net/21.15107/rcub_machinery_6417 .

Ivanov, Toni, Simonović, Aleksandar, Komarov, Dragan, Stupar, Slobodan, Petrović, Nebojša, "Metode određivanja aerodinamičke buke kod vetroturbina" in Energija, ekonomija, ekologija, no. 1-2 (2014):109-116,
https://hdl.handle.net/21.15107/rcub_machinery_6417 .

TY  - JOUR
AU  - Peković, Ognjen
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Svorcan, Jelena
AU  - Komarov, Dragan
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6072
AB  - This research paper presents an isogeometric plate finite element formulation for analysis of thick composite plates. Isogeometric finite element method which is based on non-uniform rational B-splines (NURBS) basis functions, is a novel numerical procedure developed to bridge the gap between CAD and FEM modeling of structures. In order to investigate the behavior of isogeometric plate elements under static loading, plate kinematics is based on third order shear deformation theory (TSDT) of Reddy, which is free from transverse shear locking. This paper discusses accurate transverse stress recovery procedures for TSDT isogeometric finite elements. Numerical experiments with quadratic, cubic and quartic elements are presented and obtained results are compared to other available ones.
PB  - Springer
T2  - Journal of Mechanical Science and Technology
T1  - Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory
EP  - 3162
IS  - 8
SP  - 3153
VL  - 28
DO  - 10.1007/s12206-014-0724-z
ER  - 

@article{
author = "Peković, Ognjen and Stupar, Slobodan and Simonović, Aleksandar and Svorcan, Jelena and Komarov, Dragan",
year = "2014",
abstract = "This research paper presents an isogeometric plate finite element formulation for analysis of thick composite plates. Isogeometric finite element method which is based on non-uniform rational B-splines (NURBS) basis functions, is a novel numerical procedure developed to bridge the gap between CAD and FEM modeling of structures. In order to investigate the behavior of isogeometric plate elements under static loading, plate kinematics is based on third order shear deformation theory (TSDT) of Reddy, which is free from transverse shear locking. This paper discusses accurate transverse stress recovery procedures for TSDT isogeometric finite elements. Numerical experiments with quadratic, cubic and quartic elements are presented and obtained results are compared to other available ones.",
publisher = "Springer",
journal = "Journal of Mechanical Science and Technology",
title = "Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory",
pages = "3162-3153",
number = "8",
volume = "28",
doi = "10.1007/s12206-014-0724-z"
}

Peković, O., Stupar, S., Simonović, A., Svorcan, J.,& Komarov, D.. (2014). Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory. in Journal of Mechanical Science and Technology
Springer., 28(8), 3153-3162.
https://doi.org/10.1007/s12206-014-0724-z

Peković O, Stupar S, Simonović A, Svorcan J, Komarov D. Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory. in Journal of Mechanical Science and Technology. 2014;28(8):3153-3162.
doi:10.1007/s12206-014-0724-z .

Peković, Ognjen, Stupar, Slobodan, Simonović, Aleksandar, Svorcan, Jelena, Komarov, Dragan, "Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory" in Journal of Mechanical Science and Technology, 28, no. 8 (2014):3153-3162,
https://doi.org/10.1007/s12206-014-0724-z . .

TY  - JOUR
AU  - Peković, Ognjen
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Svorcan, Jelena
AU  - Komarov, Dragan
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1856
AB  - This research paper presents an isogeometric plate finite element formulation for analysis of thick composite plates. Isogeometric finite element method which is based on non-uniform rational B-splines (NURBS) basis functions, is a novel numerical procedure developed to bridge the gap between CAD and FEM modeling of structures. In order to investigate the behavior of isogeometric plate elements under static loading, plate kinematics is based on third order shear deformation theory (TSDT) of Reddy, which is free from transverse shear locking. This paper discusses accurate transverse stress recovery procedures for TSDT isogeometric finite elements. Numerical experiments with quadratic, cubic and quartic elements are presented and obtained results are compared to other available ones.
PB  - Korean Soc Mechanical Engineers, Seoul
T2  - Journal of Mechanical Science and Technology
T1  - Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory
EP  - 3162
IS  - 8
SP  - 3153
VL  - 28
DO  - 10.1007/s12206-014-0724-z
ER  - 

@article{
author = "Peković, Ognjen and Stupar, Slobodan and Simonović, Aleksandar and Svorcan, Jelena and Komarov, Dragan",
year = "2014",
abstract = "This research paper presents an isogeometric plate finite element formulation for analysis of thick composite plates. Isogeometric finite element method which is based on non-uniform rational B-splines (NURBS) basis functions, is a novel numerical procedure developed to bridge the gap between CAD and FEM modeling of structures. In order to investigate the behavior of isogeometric plate elements under static loading, plate kinematics is based on third order shear deformation theory (TSDT) of Reddy, which is free from transverse shear locking. This paper discusses accurate transverse stress recovery procedures for TSDT isogeometric finite elements. Numerical experiments with quadratic, cubic and quartic elements are presented and obtained results are compared to other available ones.",
publisher = "Korean Soc Mechanical Engineers, Seoul",
journal = "Journal of Mechanical Science and Technology",
title = "Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory",
pages = "3162-3153",
number = "8",
volume = "28",
doi = "10.1007/s12206-014-0724-z"
}

Peković, O., Stupar, S., Simonović, A., Svorcan, J.,& Komarov, D.. (2014). Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory. in Journal of Mechanical Science and Technology
Korean Soc Mechanical Engineers, Seoul., 28(8), 3153-3162.
https://doi.org/10.1007/s12206-014-0724-z

Peković O, Stupar S, Simonović A, Svorcan J, Komarov D. Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory. in Journal of Mechanical Science and Technology. 2014;28(8):3153-3162.
doi:10.1007/s12206-014-0724-z .

Peković, Ognjen, Stupar, Slobodan, Simonović, Aleksandar, Svorcan, Jelena, Komarov, Dragan, "Isogeometric bending analysis of composite plates based on a higher-order shear deformation theory" in Journal of Mechanical Science and Technology, 28, no. 8 (2014):3153-3162,
https://doi.org/10.1007/s12206-014-0724-z . .

TY  - CONF
AU  - Komarov, Dragan
AU  - Svorcan, Jelena
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Baltić, Marija
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4459
AB  - Airfoil S809 has been used for design of series of blades for experimental determination of wind turbine aerodynamic loads. In order to validate aerodynamic models of wind turbine rotors based on momentum or vortex theory it is crucial to have reliable aerodynamic data on blade sections. On the other hand, for full three dimensional rotor computations based on Reynolds averaged Navier-Stokes equations (RANS), it is necessary to calibrate chosen numerical model in two dimensional cases. Therefore, computational study of flow around S809 airfoil was conducted using RANS in ANSYS FLUENT 14.5. Turbulence models k-ω SST and γ-Reθ (Transition SST) were used in order to investigate their capabilities to predict airfoil aerodynamic characteristics. The obtained results were compared to lift and drag coefficients from available wind tunnel tests. Flow domain was discretized both using fully structured and unstructured hybrid grid and the results have been compared. In performed computations non-dimensional distance from the wall y+ was below 1. Laminar to turbulent boundary layer transition was captured. In addition to flow
simulations based on finite volume method, viscous-inviscid method available in X-Foil was
used to compute airfoil performance.
PB  - Belgrade : Serbian Society of Mechanics
C3  - 4th Serbian (29th Yu) Congress on Theoretical and Applied Mechanics, Vrnjačka Banja, Serbia, 4-7 June 2013
T1  - Numerical investigation of S809 airfoil aerodynamic characteristics
EP  - 254
SP  - 249
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4459
ER  - 

@conference{
author = "Komarov, Dragan and Svorcan, Jelena and Stupar, Slobodan and Simonović, Aleksandar and Baltić, Marija",
year = "2013",
abstract = "Airfoil S809 has been used for design of series of blades for experimental determination of wind turbine aerodynamic loads. In order to validate aerodynamic models of wind turbine rotors based on momentum or vortex theory it is crucial to have reliable aerodynamic data on blade sections. On the other hand, for full three dimensional rotor computations based on Reynolds averaged Navier-Stokes equations (RANS), it is necessary to calibrate chosen numerical model in two dimensional cases. Therefore, computational study of flow around S809 airfoil was conducted using RANS in ANSYS FLUENT 14.5. Turbulence models k-ω SST and γ-Reθ (Transition SST) were used in order to investigate their capabilities to predict airfoil aerodynamic characteristics. The obtained results were compared to lift and drag coefficients from available wind tunnel tests. Flow domain was discretized both using fully structured and unstructured hybrid grid and the results have been compared. In performed computations non-dimensional distance from the wall y+ was below 1. Laminar to turbulent boundary layer transition was captured. In addition to flow
simulations based on finite volume method, viscous-inviscid method available in X-Foil was
used to compute airfoil performance.",
publisher = "Belgrade : Serbian Society of Mechanics",
journal = "4th Serbian (29th Yu) Congress on Theoretical and Applied Mechanics, Vrnjačka Banja, Serbia, 4-7 June 2013",
title = "Numerical investigation of S809 airfoil aerodynamic characteristics",
pages = "254-249",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4459"
}

Komarov, D., Svorcan, J., Stupar, S., Simonović, A.,& Baltić, M.. (2013). Numerical investigation of S809 airfoil aerodynamic characteristics. in 4th Serbian (29th Yu) Congress on Theoretical and Applied Mechanics, Vrnjačka Banja, Serbia, 4-7 June 2013
Belgrade : Serbian Society of Mechanics., 249-254.
https://hdl.handle.net/21.15107/rcub_machinery_4459

Komarov D, Svorcan J, Stupar S, Simonović A, Baltić M. Numerical investigation of S809 airfoil aerodynamic characteristics. in 4th Serbian (29th Yu) Congress on Theoretical and Applied Mechanics, Vrnjačka Banja, Serbia, 4-7 June 2013. 2013;:249-254.
https://hdl.handle.net/21.15107/rcub_machinery_4459 .

Komarov, Dragan, Svorcan, Jelena, Stupar, Slobodan, Simonović, Aleksandar, Baltić, Marija, "Numerical investigation of S809 airfoil aerodynamic characteristics" in 4th Serbian (29th Yu) Congress on Theoretical and Applied Mechanics, Vrnjačka Banja, Serbia, 4-7 June 2013 (2013):249-254,
https://hdl.handle.net/21.15107/rcub_machinery_4459 .

TY  - CONF
AU  - Komarov, Dragan
AU  - Svorcan, Jelena
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Isaković, Jovan
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4457
AB  - Flows over airfoils have been a subject of a number of recent researches, conducted both by
experimental and computational means. The aerodynamic performance of airfoils can be highly
influenced by laminar-turbulent transition in the boundary layer. A numerical analysis of the
incompressible flow around SD7003 and S809 airfoils was conducted using ANSYS Fluent 14.
Their aerodynamic performance are highly influenced by laminar-turbulent transition in the
boundary layer that was evident for investigated range of Reynolds numbers and angles of attacks.
RANS equations were closed by three different turbulence models. In order to establish which
model more appropriately describes the investigated flow, Spalart-Allmaras, k-ω SST and
γ-Reθ (Transition SST) models were used. In addition to flow simulations based on finite volume
method, viscous-inviscid panel method available in X-Foil was used to compute airfoils
performance. The drag and lift curves of the airfoils have been computed. The results were compared to available experimental results. Currently standard turbulence models such as Spalart-Allmaras and k-ω SST have limited possibilities in terms of capturing complex recirculating region of flow on upper surface of airfoil. Transition SST model gave promising results and should be further tested. Nevertheless, standard turbulence models could be utilized more successfully with certain level of customization and combining with available methods for transition prediction, such
as e^N method. Generally, Transition SST turbulence model gave better results comparing to
Spalart-Allmaras and k-ω SST models.
PB  - 3AF – Association Aéronautique et Astronautique de France
C3  - 48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013
T1  - RANS analysis of the transitional flow around airfoils at low Reynolds number
SP  - FP08-2013-komarov
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4457
ER  - 

@conference{
author = "Komarov, Dragan and Svorcan, Jelena and Stupar, Slobodan and Simonović, Aleksandar and Isaković, Jovan",
year = "2013",
abstract = "Flows over airfoils have been a subject of a number of recent researches, conducted both by
experimental and computational means. The aerodynamic performance of airfoils can be highly
influenced by laminar-turbulent transition in the boundary layer. A numerical analysis of the
incompressible flow around SD7003 and S809 airfoils was conducted using ANSYS Fluent 14.
Their aerodynamic performance are highly influenced by laminar-turbulent transition in the
boundary layer that was evident for investigated range of Reynolds numbers and angles of attacks.
RANS equations were closed by three different turbulence models. In order to establish which
model more appropriately describes the investigated flow, Spalart-Allmaras, k-ω SST and
γ-Reθ (Transition SST) models were used. In addition to flow simulations based on finite volume
method, viscous-inviscid panel method available in X-Foil was used to compute airfoils
performance. The drag and lift curves of the airfoils have been computed. The results were compared to available experimental results. Currently standard turbulence models such as Spalart-Allmaras and k-ω SST have limited possibilities in terms of capturing complex recirculating region of flow on upper surface of airfoil. Transition SST model gave promising results and should be further tested. Nevertheless, standard turbulence models could be utilized more successfully with certain level of customization and combining with available methods for transition prediction, such
as e^N method. Generally, Transition SST turbulence model gave better results comparing to
Spalart-Allmaras and k-ω SST models.",
publisher = "3AF – Association Aéronautique et Astronautique de France",
journal = "48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013",
title = "RANS analysis of the transitional flow around airfoils at low Reynolds number",
pages = "FP08-2013-komarov",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4457"
}

Komarov, D., Svorcan, J., Stupar, S., Simonović, A.,& Isaković, J.. (2013). RANS analysis of the transitional flow around airfoils at low Reynolds number. in 48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013
3AF – Association Aéronautique et Astronautique de France., FP08-2013-komarov.
https://hdl.handle.net/21.15107/rcub_machinery_4457

Komarov D, Svorcan J, Stupar S, Simonović A, Isaković J. RANS analysis of the transitional flow around airfoils at low Reynolds number. in 48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013. 2013;:FP08-2013-komarov.
https://hdl.handle.net/21.15107/rcub_machinery_4457 .

Komarov, Dragan, Svorcan, Jelena, Stupar, Slobodan, Simonović, Aleksandar, Isaković, Jovan, "RANS analysis of the transitional flow around airfoils at low Reynolds number" in 48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013 (2013):FP08-2013-komarov,
https://hdl.handle.net/21.15107/rcub_machinery_4457 .

TY  - CONF
AU  - Stupar, Slobodan
AU  - Isaković, Jovan
AU  - Svorcan, Jelena
AU  - Damljanović, Dijana
AU  - Komarov, Dragan
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4458
AB  - Missile calibration model was experimentally tested and results were compared to computations including different RANS turbulence models. Computed aerodynamic characteristics were compared to the results obtained in T-38 trisonic blowdown wind tunnel of the Military Technical Institute of Serbia. The results for the range of angles-of-attack between 0º and 16º are presented. The computations were done for Mach 0.6 and 2. In the wind tunnel test section model was supported by a tail sting mounted on a pitch-and-roll mechanism by which desired aerodynamic angles can be achieved. Pressure-measurement installation, consisting of 40 ports, was built into the model. Pressure distributions were measured using an electromechanical scanning device with
a solenoid-driven valve installed in the model support, behind the tail sting. A satisfactory correlation between the two sets of data was achieved leading to the conclusion that the obtained results can be useful for further numerical and experimental investigations.
PB  - 3AF – Association Aéronautique et Astronautique de France
C3  - 48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013
T1  - Experiment and computation of subsonic and supersonic flow around missile calibration model
SP  - FP09-2013-stupar
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4458
ER  - 

@conference{
author = "Stupar, Slobodan and Isaković, Jovan and Svorcan, Jelena and Damljanović, Dijana and Komarov, Dragan",
year = "2013",
abstract = "Missile calibration model was experimentally tested and results were compared to computations including different RANS turbulence models. Computed aerodynamic characteristics were compared to the results obtained in T-38 trisonic blowdown wind tunnel of the Military Technical Institute of Serbia. The results for the range of angles-of-attack between 0º and 16º are presented. The computations were done for Mach 0.6 and 2. In the wind tunnel test section model was supported by a tail sting mounted on a pitch-and-roll mechanism by which desired aerodynamic angles can be achieved. Pressure-measurement installation, consisting of 40 ports, was built into the model. Pressure distributions were measured using an electromechanical scanning device with
a solenoid-driven valve installed in the model support, behind the tail sting. A satisfactory correlation between the two sets of data was achieved leading to the conclusion that the obtained results can be useful for further numerical and experimental investigations.",
publisher = "3AF – Association Aéronautique et Astronautique de France",
journal = "48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013",
title = "Experiment and computation of subsonic and supersonic flow around missile calibration model",
pages = "FP09-2013-stupar",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4458"
}

Stupar, S., Isaković, J., Svorcan, J., Damljanović, D.,& Komarov, D.. (2013). Experiment and computation of subsonic and supersonic flow around missile calibration model. in 48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013
3AF – Association Aéronautique et Astronautique de France., FP09-2013-stupar.
https://hdl.handle.net/21.15107/rcub_machinery_4458

Stupar S, Isaković J, Svorcan J, Damljanović D, Komarov D. Experiment and computation of subsonic and supersonic flow around missile calibration model. in 48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013. 2013;:FP09-2013-stupar.
https://hdl.handle.net/21.15107/rcub_machinery_4458 .

Stupar, Slobodan, Isaković, Jovan, Svorcan, Jelena, Damljanović, Dijana, Komarov, Dragan, "Experiment and computation of subsonic and supersonic flow around missile calibration model" in 48th International Symposium of Applied Aerodynamics (3AF), Saint-Louis, 25-27 March 2013 (2013):FP09-2013-stupar,
https://hdl.handle.net/21.15107/rcub_machinery_4458 .

TY  - JOUR
AU  - Biadgo, Mulugeta Asress
AU  - Simonović, Aleksandar
AU  - Komarov, Dragan
AU  - Stupar, Slobodan
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1681
AB  - Over the centuries, energy has been supplied by wood, coal, oil and natural gas, as well as by uranium. All these energy sources are limited and create pollution problems. This has led countries to focus on a sustainable and cleaner energy sources. Wind energy is rapidly emerging as one of the most cost-effective forms of renewable energy with very significant increases in annual installed capacity around the world. In this paper, authors have tried to review the current state of wind power utilization in Ethiopia. First, a brief overview is given on the Ethiopian electric power sector in order to gain insight into the main energy sources of the country and installed electric power capacities. Wind energy potential and current energy policy in Ethiopia were discussed respectively in the subsequent sections. Finally, short reviews of the ongoing and planned wind energy together with other renewable energy projects are given. Ethiopia, a country that relies on hydroelectric plants for the bulk of its power, is now developing significant wind energy capacities. Lack of reliable wind data covering the entire country has been one of the reasons for limited application of wind energy in Ethiopia, but recently studies have shown that Ethiopia has substantial potential to generate electricity from wind, geothermal and hydropower. Considering the substantial wind resource in the country, the government has committed itself to generate power from wind plants by constructing eight wind farms with total capacities of 1116 MW together with a number of hydropower plants over the five year Growth and Transformation Plan (GTP) period from 2011 to 2015. This development of wind power is a part of the current energy sector policy of the country that aims at a five-fold increase in renewable energy production by the end of 2015.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Renewable & Sustainable Energy Reviews
T1  - Wind energy resource development in Ethiopia as an alternative energy future beyond the. dominant hydropower
EP  - 378
SP  - 366
VL  - 23
DO  - 10.1016/j.rser.2013.02.047
ER  - 

@article{
author = "Biadgo, Mulugeta Asress and Simonović, Aleksandar and Komarov, Dragan and Stupar, Slobodan",
year = "2013",
abstract = "Over the centuries, energy has been supplied by wood, coal, oil and natural gas, as well as by uranium. All these energy sources are limited and create pollution problems. This has led countries to focus on a sustainable and cleaner energy sources. Wind energy is rapidly emerging as one of the most cost-effective forms of renewable energy with very significant increases in annual installed capacity around the world. In this paper, authors have tried to review the current state of wind power utilization in Ethiopia. First, a brief overview is given on the Ethiopian electric power sector in order to gain insight into the main energy sources of the country and installed electric power capacities. Wind energy potential and current energy policy in Ethiopia were discussed respectively in the subsequent sections. Finally, short reviews of the ongoing and planned wind energy together with other renewable energy projects are given. Ethiopia, a country that relies on hydroelectric plants for the bulk of its power, is now developing significant wind energy capacities. Lack of reliable wind data covering the entire country has been one of the reasons for limited application of wind energy in Ethiopia, but recently studies have shown that Ethiopia has substantial potential to generate electricity from wind, geothermal and hydropower. Considering the substantial wind resource in the country, the government has committed itself to generate power from wind plants by constructing eight wind farms with total capacities of 1116 MW together with a number of hydropower plants over the five year Growth and Transformation Plan (GTP) period from 2011 to 2015. This development of wind power is a part of the current energy sector policy of the country that aims at a five-fold increase in renewable energy production by the end of 2015.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Renewable & Sustainable Energy Reviews",
title = "Wind energy resource development in Ethiopia as an alternative energy future beyond the. dominant hydropower",
pages = "378-366",
volume = "23",
doi = "10.1016/j.rser.2013.02.047"
}

Biadgo, M. A., Simonović, A., Komarov, D.,& Stupar, S.. (2013). Wind energy resource development in Ethiopia as an alternative energy future beyond the. dominant hydropower. in Renewable & Sustainable Energy Reviews
Pergamon-Elsevier Science Ltd, Oxford., 23, 366-378.
https://doi.org/10.1016/j.rser.2013.02.047

Biadgo MA, Simonović A, Komarov D, Stupar S. Wind energy resource development in Ethiopia as an alternative energy future beyond the. dominant hydropower. in Renewable & Sustainable Energy Reviews. 2013;23:366-378.
doi:10.1016/j.rser.2013.02.047 .

Biadgo, Mulugeta Asress, Simonović, Aleksandar, Komarov, Dragan, Stupar, Slobodan, "Wind energy resource development in Ethiopia as an alternative energy future beyond the. dominant hydropower" in Renewable & Sustainable Energy Reviews, 23 (2013):366-378,
https://doi.org/10.1016/j.rser.2013.02.047 . .

TY  - JOUR
AU  - Biadgo, Mulugeta Asress
AU  - Simonović, Aleksandar
AU  - Komarov, Dragan
AU  - Stupar, Slobodan
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1782
AB  - Većina istraživanja vezanih za vetroturbine su fokusirana na precizno određivanje njihove efikasnosti. U radu je istaknut napredak koji je ostvaren u razvoju aerodinamičkih modela za analizu vetroturbina sa vertikalnom osom obrtanja, analizi strujanja vazduha kroz strujne cevi. Izvedena je numerička i analitička analiza performansi za nevitoperenu NACA0012 lopaticu vetroturbine sa vertikalnom osom obrtanja. Numerička simulacija je urađena za nestacionarno, dvodimenziono strujanje oko modela vetroturbine sa vertikalnom osom obrtanja pomoću softvera FLUENT rešavanjem Rejnoldsovih jednačina. Naposletku, izvršeno je poređenje rezultata dobijenih primenom CFD-a i DMST analitičkog modela. Rezultati dobijeni na ova dva načina su ukazali na postojanje minimalnih ili negativnih obrtnih momenata i performansi pri niskim koeficijentima rada rotora, što implicira otežano samopokretanje rotora analizirane konfiguracije sa NACA0012 aeroprofilom.
AB  - The majority of wind turbine research is focused on accurately efficiency prediction. This work highlights the progress made in the development of aerodynamic models for studying Vertical-Axis Wind Turbines (VAWTs) with particular emphasis on stream tube approach. Numerical and analytical investigation is conducted on straight blade fixed pitch VAWT using NACA0012 airfoil as a blade profile to assess its performance. Numerical simulation is done for two-dimensional unsteady flow around the same VAWT model using ANSYS FLUENT by solving Reynolds- averaged Navier-Stokes equations. Finally, comparison of the analytical results using double multiple stream tube (DMST) model with computational fluid dynamics (CFD) simulation has been done. Both the CFD and DMST results have shown minimum and/or negative torque and performance at lower tip speed ratios for the modeled turbine, which implies the inability of NACA0012 to self start.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Numeričko i analitičko određivanje performansi vetroturbina sa vertikalnom osom obrtanja
T1  - Numerical and analytical investigation of vertical axis wind turbine
EP  - 58
IS  - 1
SP  - 49
VL  - 41
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1782
ER  - 

@article{
author = "Biadgo, Mulugeta Asress and Simonović, Aleksandar and Komarov, Dragan and Stupar, Slobodan",
year = "2013",
abstract = "Većina istraživanja vezanih za vetroturbine su fokusirana na precizno određivanje njihove efikasnosti. U radu je istaknut napredak koji je ostvaren u razvoju aerodinamičkih modela za analizu vetroturbina sa vertikalnom osom obrtanja, analizi strujanja vazduha kroz strujne cevi. Izvedena je numerička i analitička analiza performansi za nevitoperenu NACA0012 lopaticu vetroturbine sa vertikalnom osom obrtanja. Numerička simulacija je urađena za nestacionarno, dvodimenziono strujanje oko modela vetroturbine sa vertikalnom osom obrtanja pomoću softvera FLUENT rešavanjem Rejnoldsovih jednačina. Naposletku, izvršeno je poređenje rezultata dobijenih primenom CFD-a i DMST analitičkog modela. Rezultati dobijeni na ova dva načina su ukazali na postojanje minimalnih ili negativnih obrtnih momenata i performansi pri niskim koeficijentima rada rotora, što implicira otežano samopokretanje rotora analizirane konfiguracije sa NACA0012 aeroprofilom., The majority of wind turbine research is focused on accurately efficiency prediction. This work highlights the progress made in the development of aerodynamic models for studying Vertical-Axis Wind Turbines (VAWTs) with particular emphasis on stream tube approach. Numerical and analytical investigation is conducted on straight blade fixed pitch VAWT using NACA0012 airfoil as a blade profile to assess its performance. Numerical simulation is done for two-dimensional unsteady flow around the same VAWT model using ANSYS FLUENT by solving Reynolds- averaged Navier-Stokes equations. Finally, comparison of the analytical results using double multiple stream tube (DMST) model with computational fluid dynamics (CFD) simulation has been done. Both the CFD and DMST results have shown minimum and/or negative torque and performance at lower tip speed ratios for the modeled turbine, which implies the inability of NACA0012 to self start.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Numeričko i analitičko određivanje performansi vetroturbina sa vertikalnom osom obrtanja, Numerical and analytical investigation of vertical axis wind turbine",
pages = "58-49",
number = "1",
volume = "41",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1782"
}

Biadgo, M. A., Simonović, A., Komarov, D.,& Stupar, S.. (2013). Numeričko i analitičko određivanje performansi vetroturbina sa vertikalnom osom obrtanja. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 41(1), 49-58.
https://hdl.handle.net/21.15107/rcub_machinery_1782

Biadgo MA, Simonović A, Komarov D, Stupar S. Numeričko i analitičko određivanje performansi vetroturbina sa vertikalnom osom obrtanja. in FME Transactions. 2013;41(1):49-58.
https://hdl.handle.net/21.15107/rcub_machinery_1782 .

Biadgo, Mulugeta Asress, Simonović, Aleksandar, Komarov, Dragan, Stupar, Slobodan, "Numeričko i analitičko određivanje performansi vetroturbina sa vertikalnom osom obrtanja" in FME Transactions, 41, no. 1 (2013):49-58,
https://hdl.handle.net/21.15107/rcub_machinery_1782 .

TY  - JOUR
AU  - Svorcan, Jelena
AU  - Stupar, Slobodan
AU  - Komarov, Dragan
AU  - Peković, Ognjen
AU  - Kostić, Ivan
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1677
AB  - Small-scale vertical axis wind turbines are regarded today as an attractive source of green energy, still insufficiently implemented and tested. This paper presents a fast design methodology of such a VAWT, in terms of choosing its main parameters: airfoil, rotor diameter and solidity. For obtaining generated power of each considered geometrical model at different undisturbed wind velocities and rotor angular velocities two models were used - momentum and vortex-wake model, combined with experimentally measured airfoil data (airfoil lift and drag coefficients). Even though the former model is simpler, it is the most utilized model, known to provide good results in stationary working regimes. Both models still present fairly accurate and fast tools for computation and optimization, particularly useful in the phase of conceptual design. In this research, the use of the momentum model resulted in determination of the maximal power coefficient, optimal-and minimal freestream velocity for every considered VAWT model. From these output parameters, a selection of the optimal geometric model was done, and a more detailed transient analysis and flow representation around the selected solution was obtained by the vortex-wake model. The results obtained by the two used computational models coincide satisfactorily.
PB  - Korean Soc Mechanical Engineers, Seoul
T2  - Journal of Mechanical Science and Technology
T1  - Aerodynamic design and analysis of a small-scale vertical axis wind turbine
EP  - 2373
IS  - 8
SP  - 2367
VL  - 27
DO  - 10.1007/s12206-013-0621-x
ER  - 

@article{
author = "Svorcan, Jelena and Stupar, Slobodan and Komarov, Dragan and Peković, Ognjen and Kostić, Ivan",
year = "2013",
abstract = "Small-scale vertical axis wind turbines are regarded today as an attractive source of green energy, still insufficiently implemented and tested. This paper presents a fast design methodology of such a VAWT, in terms of choosing its main parameters: airfoil, rotor diameter and solidity. For obtaining generated power of each considered geometrical model at different undisturbed wind velocities and rotor angular velocities two models were used - momentum and vortex-wake model, combined with experimentally measured airfoil data (airfoil lift and drag coefficients). Even though the former model is simpler, it is the most utilized model, known to provide good results in stationary working regimes. Both models still present fairly accurate and fast tools for computation and optimization, particularly useful in the phase of conceptual design. In this research, the use of the momentum model resulted in determination of the maximal power coefficient, optimal-and minimal freestream velocity for every considered VAWT model. From these output parameters, a selection of the optimal geometric model was done, and a more detailed transient analysis and flow representation around the selected solution was obtained by the vortex-wake model. The results obtained by the two used computational models coincide satisfactorily.",
publisher = "Korean Soc Mechanical Engineers, Seoul",
journal = "Journal of Mechanical Science and Technology",
title = "Aerodynamic design and analysis of a small-scale vertical axis wind turbine",
pages = "2373-2367",
number = "8",
volume = "27",
doi = "10.1007/s12206-013-0621-x"
}

Svorcan, J., Stupar, S., Komarov, D., Peković, O.,& Kostić, I.. (2013). Aerodynamic design and analysis of a small-scale vertical axis wind turbine. in Journal of Mechanical Science and Technology
Korean Soc Mechanical Engineers, Seoul., 27(8), 2367-2373.
https://doi.org/10.1007/s12206-013-0621-x

Svorcan J, Stupar S, Komarov D, Peković O, Kostić I. Aerodynamic design and analysis of a small-scale vertical axis wind turbine. in Journal of Mechanical Science and Technology. 2013;27(8):2367-2373.
doi:10.1007/s12206-013-0621-x .

Svorcan, Jelena, Stupar, Slobodan, Komarov, Dragan, Peković, Ognjen, Kostić, Ivan, "Aerodynamic design and analysis of a small-scale vertical axis wind turbine" in Journal of Mechanical Science and Technology, 27, no. 8 (2013):2367-2373,
https://doi.org/10.1007/s12206-013-0621-x . .

TY  - CONF
AU  - Posteljnik, Zorana
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Komarov, Dragan
AU  - Svorcan, Jelena
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1525
PB  - University of Belgrade
C3  - 29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012
T1  - Experimental investigation of industrialsteel stack temperature distribution
EP  - 229
SP  - 226
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1525
ER  - 

@conference{
author = "Posteljnik, Zorana and Stupar, Slobodan and Simonović, Aleksandar and Komarov, Dragan and Svorcan, Jelena",
year = "2012",
publisher = "University of Belgrade",
journal = "29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012",
title = "Experimental investigation of industrialsteel stack temperature distribution",
pages = "229-226",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1525"
}

Posteljnik, Z., Stupar, S., Simonović, A., Komarov, D.,& Svorcan, J.. (2012). Experimental investigation of industrialsteel stack temperature distribution. in 29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012
University of Belgrade., 226-229.
https://hdl.handle.net/21.15107/rcub_machinery_1525

Posteljnik Z, Stupar S, Simonović A, Komarov D, Svorcan J. Experimental investigation of industrialsteel stack temperature distribution. in 29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012. 2012;:226-229.
https://hdl.handle.net/21.15107/rcub_machinery_1525 .

Posteljnik, Zorana, Stupar, Slobodan, Simonović, Aleksandar, Komarov, Dragan, Svorcan, Jelena, "Experimental investigation of industrialsteel stack temperature distribution" in 29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012 (2012):226-229,
https://hdl.handle.net/21.15107/rcub_machinery_1525 .

TY  - CONF
AU  - Svorcan, Jelena
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Komarov, Dragan
AU  - Trivković, Srđan
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1554
PB  - University of Belgrade
C3  - 29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012
T1  - Assessment of aircraft wing frequency characteristics
EP  - 193
SP  - 190
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1554
ER  - 

@conference{
author = "Svorcan, Jelena and Stupar, Slobodan and Simonović, Aleksandar and Komarov, Dragan and Trivković, Srđan",
year = "2012",
publisher = "University of Belgrade",
journal = "29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012",
title = "Assessment of aircraft wing frequency characteristics",
pages = "193-190",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1554"
}

Svorcan, J., Stupar, S., Simonović, A., Komarov, D.,& Trivković, S.. (2012). Assessment of aircraft wing frequency characteristics. in 29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012
University of Belgrade., 190-193.
https://hdl.handle.net/21.15107/rcub_machinery_1554

Svorcan J, Stupar S, Simonović A, Komarov D, Trivković S. Assessment of aircraft wing frequency characteristics. in 29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012. 2012;:190-193.
https://hdl.handle.net/21.15107/rcub_machinery_1554 .

Svorcan, Jelena, Stupar, Slobodan, Simonović, Aleksandar, Komarov, Dragan, Trivković, Srđan, "Assessment of aircraft wing frequency characteristics" in 29th DANUBlA-ADRIA Symposium on Advances in Experimental Mechanics, DAS 2012 (2012):190-193,
https://hdl.handle.net/21.15107/rcub_machinery_1554 .

TY  - CONF
AU  - Svorcan, Jelena
AU  - Stupar, Slobodan
AU  - Komarov, Dragan
AU  - Zorić, Nemanja
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4462
AB  - Parametarsko modeliranje predstavlja jedan od mogućih pristupa automatizaciji procesa projektovanja novog ili unapređenja već postojećeg proizvoda. Model prvenstveno zavisi od relacija definisanih između njegovih sastavnih delova, dok je sama geometrija modela njihova posledica. Programski paket CATIA nudi nekoliko različitih nivoa automatizacije, od kojih je jedan stvaranje izvršnih tekstualnih fajlova - skriptova. Ovim radom opisan je skript kojim je moguće brzo i jednostavno generisati trodimenzionalni CAD model lopatica horizontalnih vetroturbina. Dobijeni model moguće je kasnije menjati standardnim alatkama programskog paketa CATIA. Međusobna različitost modela lopatica postiže se unošenjem različitih ulaznih podataka kao što su korišćeni aeroprofil, prečnik rotora, tetiva, suženje i vitoperenje lopatice, broj lopatica, debljina oplate, itd.
PB  - Univerzitet u Beogradu - Mašinski fakultet
C3  - 38. JUPITER konferencija : zbornik radova
T1  - Automatizacija procesa modeliranja lopatice vetroturbine u programskom paketu CATIA
EP  - 2.55
SP  - 2.50
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4462
ER  - 

@conference{
author = "Svorcan, Jelena and Stupar, Slobodan and Komarov, Dragan and Zorić, Nemanja",
year = "2012",
abstract = "Parametarsko modeliranje predstavlja jedan od mogućih pristupa automatizaciji procesa projektovanja novog ili unapređenja već postojećeg proizvoda. Model prvenstveno zavisi od relacija definisanih između njegovih sastavnih delova, dok je sama geometrija modela njihova posledica. Programski paket CATIA nudi nekoliko različitih nivoa automatizacije, od kojih je jedan stvaranje izvršnih tekstualnih fajlova - skriptova. Ovim radom opisan je skript kojim je moguće brzo i jednostavno generisati trodimenzionalni CAD model lopatica horizontalnih vetroturbina. Dobijeni model moguće je kasnije menjati standardnim alatkama programskog paketa CATIA. Međusobna različitost modela lopatica postiže se unošenjem različitih ulaznih podataka kao što su korišćeni aeroprofil, prečnik rotora, tetiva, suženje i vitoperenje lopatice, broj lopatica, debljina oplate, itd.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet",
journal = "38. JUPITER konferencija : zbornik radova",
title = "Automatizacija procesa modeliranja lopatice vetroturbine u programskom paketu CATIA",
pages = "2.55-2.50",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4462"
}

Svorcan, J., Stupar, S., Komarov, D.,& Zorić, N.. (2012). Automatizacija procesa modeliranja lopatice vetroturbine u programskom paketu CATIA. in 38. JUPITER konferencija : zbornik radova
Univerzitet u Beogradu - Mašinski fakultet., 2.50-2.55.
https://hdl.handle.net/21.15107/rcub_machinery_4462

Svorcan J, Stupar S, Komarov D, Zorić N. Automatizacija procesa modeliranja lopatice vetroturbine u programskom paketu CATIA. in 38. JUPITER konferencija : zbornik radova. 2012;:2.50-2.55.
https://hdl.handle.net/21.15107/rcub_machinery_4462 .

Svorcan, Jelena, Stupar, Slobodan, Komarov, Dragan, Zorić, Nemanja, "Automatizacija procesa modeliranja lopatice vetroturbine u programskom paketu CATIA" in 38. JUPITER konferencija : zbornik radova (2012):2.50-2.55,
https://hdl.handle.net/21.15107/rcub_machinery_4462 .

TY  - CONF
AU  - Komarov, Dragan
AU  - Svorcan, Jelena
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Stanojević, Marija
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4461
AB  - A numerical analysis of the incompressible flow around two low-Reynolds airfoils was conducted. The drag and lift curves of the airfoils have been computed. The results were compared to available experimental results (University of Illinois at Urbana-Champaign Low-Speed Airfoil Tests). Several RANS turbulence models were used for computations in order to investigate their capabilities to predict airfoil aerodynamic characteristics in wide range of angles of attack, from low to high incidences. Both steady and unsteady computations were done depending on the expected prevailing nature of the investigated flow. The main challenge in the computations was to identify separation regions which greatly influence aerodynamic characteristics of the airfoils. Generally used RANS-based computational methods ought to be customized in order to predict flow around low-Reynolds airfoils for wider range of angles of attack.
PB  - Belgrade : Military Technical Institute - VTI
C3  - 5th International scientific conference on defensive technologies OTEH 2012
T1  - Computational study of flow around low-Reynolds airfoils
EP  - 60
SP  - 55
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4461
ER  - 

@conference{
author = "Komarov, Dragan and Svorcan, Jelena and Stupar, Slobodan and Simonović, Aleksandar and Stanojević, Marija",
year = "2012",
abstract = "A numerical analysis of the incompressible flow around two low-Reynolds airfoils was conducted. The drag and lift curves of the airfoils have been computed. The results were compared to available experimental results (University of Illinois at Urbana-Champaign Low-Speed Airfoil Tests). Several RANS turbulence models were used for computations in order to investigate their capabilities to predict airfoil aerodynamic characteristics in wide range of angles of attack, from low to high incidences. Both steady and unsteady computations were done depending on the expected prevailing nature of the investigated flow. The main challenge in the computations was to identify separation regions which greatly influence aerodynamic characteristics of the airfoils. Generally used RANS-based computational methods ought to be customized in order to predict flow around low-Reynolds airfoils for wider range of angles of attack.",
publisher = "Belgrade : Military Technical Institute - VTI",
journal = "5th International scientific conference on defensive technologies OTEH 2012",
title = "Computational study of flow around low-Reynolds airfoils",
pages = "60-55",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4461"
}

Komarov, D., Svorcan, J., Stupar, S., Simonović, A.,& Stanojević, M.. (2012). Computational study of flow around low-Reynolds airfoils. in 5th International scientific conference on defensive technologies OTEH 2012
Belgrade : Military Technical Institute - VTI., 55-60.
https://hdl.handle.net/21.15107/rcub_machinery_4461

Komarov D, Svorcan J, Stupar S, Simonović A, Stanojević M. Computational study of flow around low-Reynolds airfoils. in 5th International scientific conference on defensive technologies OTEH 2012. 2012;:55-60.
https://hdl.handle.net/21.15107/rcub_machinery_4461 .

Komarov, Dragan, Svorcan, Jelena, Stupar, Slobodan, Simonović, Aleksandar, Stanojević, Marija, "Computational study of flow around low-Reynolds airfoils" in 5th International scientific conference on defensive technologies OTEH 2012 (2012):55-60,
https://hdl.handle.net/21.15107/rcub_machinery_4461 .

TY  - JOUR
AU  - Komarov, Dragan
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Petrović, Nebojša
AU  - Svorcan, Jelena
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4509
AB  - Pregrade unutar korenog dela čeličnih industrijskih dimnjaka sprečavaju međusobni uticaj struja dimnih gasova iz naspramno postavljenih dimovodnih kanala. U slučaju nesimetričnosti masenih protoka i različitih temperatura gasova, kao i neadekvatnog izbora dimenzija pregrade, može doći kako do povećanja lokalnih gubitaka strujanja tako i do neravnomerne raspodele termičkih opterećenja plašta dimnjaka. Nesimetrična raspodela napona po obimu plašta dimnjaka nepovoljno utiče na ponašanje konstrukcije u toku eksploatacije, te može rezultovati pojavom oštećenja i ugroziti integritet konstrukcije. Pri postavljanju pregrade potrebno je razmotriti njen uticaj na strujanje u dimnjaku, njegovu funkcionalnost i efikasnost rada imajući u vidu različite radne režime celokupnog sistema. U radu su prikazani rezultati izvedenih CFD analiza strujanja unutar korenog dela dimnjaka sa više dimovodnih kanala. Izvršeno je poređenje rezultata numeričkih simulacija strujanja sa i bez pregrade. Takođe je izvršena analiza uticaja pregrade na ravnomernost raspodele termičkih opterećenja korenog dela dimnjaka.
PB  - Savez energetičara
T2  - Energija, ekonomija, ekologija - Energetika
T1  - Numerička simulacija strujanja unutar korenog dela industrijskog dimnjaka sa više dimovodnih kanala
EP  - 132
IS  - 1-2
SP  - 128
VL  - XIV
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4509
ER  - 

@article{
author = "Komarov, Dragan and Stupar, Slobodan and Simonović, Aleksandar and Petrović, Nebojša and Svorcan, Jelena",
year = "2012",
abstract = "Pregrade unutar korenog dela čeličnih industrijskih dimnjaka sprečavaju međusobni uticaj struja dimnih gasova iz naspramno postavljenih dimovodnih kanala. U slučaju nesimetričnosti masenih protoka i različitih temperatura gasova, kao i neadekvatnog izbora dimenzija pregrade, može doći kako do povećanja lokalnih gubitaka strujanja tako i do neravnomerne raspodele termičkih opterećenja plašta dimnjaka. Nesimetrična raspodela napona po obimu plašta dimnjaka nepovoljno utiče na ponašanje konstrukcije u toku eksploatacije, te može rezultovati pojavom oštećenja i ugroziti integritet konstrukcije. Pri postavljanju pregrade potrebno je razmotriti njen uticaj na strujanje u dimnjaku, njegovu funkcionalnost i efikasnost rada imajući u vidu različite radne režime celokupnog sistema. U radu su prikazani rezultati izvedenih CFD analiza strujanja unutar korenog dela dimnjaka sa više dimovodnih kanala. Izvršeno je poređenje rezultata numeričkih simulacija strujanja sa i bez pregrade. Takođe je izvršena analiza uticaja pregrade na ravnomernost raspodele termičkih opterećenja korenog dela dimnjaka.",
publisher = "Savez energetičara",
journal = "Energija, ekonomija, ekologija - Energetika",
title = "Numerička simulacija strujanja unutar korenog dela industrijskog dimnjaka sa više dimovodnih kanala",
pages = "132-128",
number = "1-2",
volume = "XIV",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4509"
}

Komarov, D., Stupar, S., Simonović, A., Petrović, N.,& Svorcan, J.. (2012). Numerička simulacija strujanja unutar korenog dela industrijskog dimnjaka sa više dimovodnih kanala. in Energija, ekonomija, ekologija - Energetika
Savez energetičara., XIV(1-2), 128-132.
https://hdl.handle.net/21.15107/rcub_machinery_4509

Komarov D, Stupar S, Simonović A, Petrović N, Svorcan J. Numerička simulacija strujanja unutar korenog dela industrijskog dimnjaka sa više dimovodnih kanala. in Energija, ekonomija, ekologija - Energetika. 2012;XIV(1-2):128-132.
https://hdl.handle.net/21.15107/rcub_machinery_4509 .

Komarov, Dragan, Stupar, Slobodan, Simonović, Aleksandar, Petrović, Nebojša, Svorcan, Jelena, "Numerička simulacija strujanja unutar korenog dela industrijskog dimnjaka sa više dimovodnih kanala" in Energija, ekonomija, ekologija - Energetika, XIV, no. 1-2 (2012):128-132,
https://hdl.handle.net/21.15107/rcub_machinery_4509 .

TY  - GEN
AU  - Petrović, Zlatko
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Peković, Ognjen
AU  - Komarov, Dragan
AU  - Zorić, Nemanja
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6207
AB  - Osnovna uloga repnog reduktora je da obezbedi potrebnu promenu pravca vratila, da prenese obrtni moment na repni rotor i da obezbedi adekvatan oslonac repnom rotoru. Ukoliko je potrebno u repnom reduktoru dolazi i do redukcije broja obrtaja. Na osnovu aerodinamičkog proračuna i proračuna performansi letelica izrađena je koncepcija transmisije i repnog reduktora helikoptera, a zatim i detaljan projekat repnog reduktora. Reduktor je kompaktne konstrukcije, projektovan sa ciljem minimiziranja mase za postavljene zahteve i date eksploatacione uslove. Reduktor je jednostepeni sa koničnim zupčastim parom sa zupčanicima čija vratila zauzimaju ugao od 90° bez promene brzine obrtanja. Podmazivanje zupčanika i ležajeva vrši se rasprskavanjem ulja prilikom obrtanja zupčanika.
T1  - Репни редуктор хеликоптера класе врло лаки
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6207
ER  - 

@misc{
author = "Petrović, Zlatko and Stupar, Slobodan and Simonović, Aleksandar and Peković, Ognjen and Komarov, Dragan and Zorić, Nemanja",
year = "2012",
abstract = "Osnovna uloga repnog reduktora je da obezbedi potrebnu promenu pravca vratila, da prenese obrtni moment na repni rotor i da obezbedi adekvatan oslonac repnom rotoru. Ukoliko je potrebno u repnom reduktoru dolazi i do redukcije broja obrtaja. Na osnovu aerodinamičkog proračuna i proračuna performansi letelica izrađena je koncepcija transmisije i repnog reduktora helikoptera, a zatim i detaljan projekat repnog reduktora. Reduktor je kompaktne konstrukcije, projektovan sa ciljem minimiziranja mase za postavljene zahteve i date eksploatacione uslove. Reduktor je jednostepeni sa koničnim zupčastim parom sa zupčanicima čija vratila zauzimaju ugao od 90° bez promene brzine obrtanja. Podmazivanje zupčanika i ležajeva vrši se rasprskavanjem ulja prilikom obrtanja zupčanika.",
title = "Репни редуктор хеликоптера класе врло лаки",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6207"
}

Petrović, Z., Stupar, S., Simonović, A., Peković, O., Komarov, D.,& Zorić, N.. (2012). Репни редуктор хеликоптера класе врло лаки. .
https://hdl.handle.net/21.15107/rcub_machinery_6207

Petrović Z, Stupar S, Simonović A, Peković O, Komarov D, Zorić N. Репни редуктор хеликоптера класе врло лаки. 2012;.
https://hdl.handle.net/21.15107/rcub_machinery_6207 .

Petrović, Zlatko, Stupar, Slobodan, Simonović, Aleksandar, Peković, Ognjen, Komarov, Dragan, Zorić, Nemanja, "Репни редуктор хеликоптера класе врло лаки" (2012),
https://hdl.handle.net/21.15107/rcub_machinery_6207 .

TY  - GEN
AU  - Petrović, Zlatko
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Trivković, Srđan
AU  - Komarov, Dragan
AU  - Svorcan, Jelena
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4451
T2  - Универзитет у Београду - Машински факултет
T1  - Глава главног ротора хеликоптера врло лаке класе
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4451
ER  - 

@misc{
author = "Petrović, Zlatko and Stupar, Slobodan and Simonović, Aleksandar and Trivković, Srđan and Komarov, Dragan and Svorcan, Jelena",
year = "2012",
journal = "Универзитет у Београду - Машински факултет",
title = "Глава главног ротора хеликоптера врло лаке класе",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4451"
}

Petrović, Z., Stupar, S., Simonović, A., Trivković, S., Komarov, D.,& Svorcan, J.. (2012). Глава главног ротора хеликоптера врло лаке класе. in Универзитет у Београду - Машински факултет.
https://hdl.handle.net/21.15107/rcub_machinery_4451

Petrović Z, Stupar S, Simonović A, Trivković S, Komarov D, Svorcan J. Глава главног ротора хеликоптера врло лаке класе. in Универзитет у Београду - Машински факултет. 2012;.
https://hdl.handle.net/21.15107/rcub_machinery_4451 .

Petrović, Zlatko, Stupar, Slobodan, Simonović, Aleksandar, Trivković, Srđan, Komarov, Dragan, Svorcan, Jelena, "Глава главног ротора хеликоптера врло лаке класе" in Универзитет у Београду - Машински факултет (2012),
https://hdl.handle.net/21.15107/rcub_machinery_4451 .

TY  - GEN
AU  - Petrović, Zlatko
AU  - Stupar, Slobodan
AU  - Simonović, Aleksandar
AU  - Peković, Ognjen
AU  - Komarov, Dragan
AU  - Svorcan, Jelena
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4450
T2  - Универзитет у Београду - Машински факултет
T1  - Главни редуктор хеликоптера класе врло лаки
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4450
ER  - 

@misc{
author = "Petrović, Zlatko and Stupar, Slobodan and Simonović, Aleksandar and Peković, Ognjen and Komarov, Dragan and Svorcan, Jelena",
year = "2012",
journal = "Универзитет у Београду - Машински факултет",
title = "Главни редуктор хеликоптера класе врло лаки",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4450"
}

Petrović, Z., Stupar, S., Simonović, A., Peković, O., Komarov, D.,& Svorcan, J.. (2012). Главни редуктор хеликоптера класе врло лаки. in Универзитет у Београду - Машински факултет.
https://hdl.handle.net/21.15107/rcub_machinery_4450

Petrović Z, Stupar S, Simonović A, Peković O, Komarov D, Svorcan J. Главни редуктор хеликоптера класе врло лаки. in Универзитет у Београду - Машински факултет. 2012;.
https://hdl.handle.net/21.15107/rcub_machinery_4450 .

Petrović, Zlatko, Stupar, Slobodan, Simonović, Aleksandar, Peković, Ognjen, Komarov, Dragan, Svorcan, Jelena, "Главни редуктор хеликоптера класе врло лаки" in Универзитет у Београду - Машински факултет (2012),
https://hdl.handle.net/21.15107/rcub_machinery_4450 .