Balać, M., Tanasković, J., Kastratović, G.,& Mirkov, N.. (2023). Kočioni mehanizam kolica za za zemaljsko opsluživanje vazduhoplova. in www.mas.bg.ac.rs.
https://hdl.handle.net/21.15107/rcub_machinery_7394

Balać M, Tanasković J, Kastratović G, Mirkov N. Kočioni mehanizam kolica za za zemaljsko opsluživanje vazduhoplova. in www.mas.bg.ac.rs. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_7394 .

Balać, Martina, Tanasković, Jovan, Kastratović, Gordana, Mirkov, Nikola, "Kočioni mehanizam kolica za za zemaljsko opsluživanje vazduhoplova" in www.mas.bg.ac.rs (2023),
https://hdl.handle.net/21.15107/rcub_machinery_7394 .

TY  - JOUR
AU  - Hasan, Mohammad Sakib
AU  - Svorcan, Jelena
AU  - Simonović, Aleksandar
AU  - Mirkov, Nikola
AU  - Kostić, Olivera
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3784
AB  - The ability of flying continuously over prolonged periods of time has become target of numerous research studies performed in recent years in both the fields of civil aviation and unmanned drones. High altitude platform stations are aircrafts that can operate for an extended period of time at altitudes 17 km above sea level and higher. The aim of this paper is to design and optimize a wing for such platforms and computationally investigate its aerodynamic performance. For that purpose, two-objective genetic algorithm, class shape transformation and panel method were combined and used to define different airfoils with the highest lift-to-drag ratio and maximal lift coefficient. Once the most suitable airfoil was chosen, polyhedral half wing was modeled and its aerodynamic performances were estimated using the CFD approach. Flow simulations of transitional flow at various angles-of-attack were realized in ANSYS FLUENT and various quantitative and qualitative results are presented, such as aerodynamic coefficient curves and flow visualizations. In the end, daily mission of the aircraft is simulated and its energy requirement is estimated. In order to be able to cruise above Serbia in July, an aircraft weighing 150 kg must accumulate 17 kWh of solar energy per day.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Optimal airfoil design and wing analysis for solar-powered high altitude platform station
EP  - 2175
IS  - 3
SP  - 2163
VL  - 26
DO  - 10.2298/TSCI210419241S
ER  - 

@article{
author = "Hasan, Mohammad Sakib and Svorcan, Jelena and Simonović, Aleksandar and Mirkov, Nikola and Kostić, Olivera",
year = "2022",
abstract = "The ability of flying continuously over prolonged periods of time has become target of numerous research studies performed in recent years in both the fields of civil aviation and unmanned drones. High altitude platform stations are aircrafts that can operate for an extended period of time at altitudes 17 km above sea level and higher. The aim of this paper is to design and optimize a wing for such platforms and computationally investigate its aerodynamic performance. For that purpose, two-objective genetic algorithm, class shape transformation and panel method were combined and used to define different airfoils with the highest lift-to-drag ratio and maximal lift coefficient. Once the most suitable airfoil was chosen, polyhedral half wing was modeled and its aerodynamic performances were estimated using the CFD approach. Flow simulations of transitional flow at various angles-of-attack were realized in ANSYS FLUENT and various quantitative and qualitative results are presented, such as aerodynamic coefficient curves and flow visualizations. In the end, daily mission of the aircraft is simulated and its energy requirement is estimated. In order to be able to cruise above Serbia in July, an aircraft weighing 150 kg must accumulate 17 kWh of solar energy per day.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Optimal airfoil design and wing analysis for solar-powered high altitude platform station",
pages = "2175-2163",
number = "3",
volume = "26",
doi = "10.2298/TSCI210419241S"
}

Hasan, M. S., Svorcan, J., Simonović, A., Mirkov, N.,& Kostić, O.. (2022). Optimal airfoil design and wing analysis for solar-powered high altitude platform station. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 26(3), 2163-2175.
https://doi.org/10.2298/TSCI210419241S

Hasan MS, Svorcan J, Simonović A, Mirkov N, Kostić O. Optimal airfoil design and wing analysis for solar-powered high altitude platform station. in Thermal Science. 2022;26(3):2163-2175.
doi:10.2298/TSCI210419241S .

Hasan, Mohammad Sakib, Svorcan, Jelena, Simonović, Aleksandar, Mirkov, Nikola, Kostić, Olivera, "Optimal airfoil design and wing analysis for solar-powered high altitude platform station" in Thermal Science, 26, no. 3 (2022):2163-2175,
https://doi.org/10.2298/TSCI210419241S . .

TY  - JOUR
AU  - Mirkov, Nikola
AU  - Radenović, Stojan
AU  - Radojević, Slobodan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3519
AB  - The main purpose of this article is to improve, generalize and complement some recently established results for Perov's type F-contractions. In our approach, we use only the property (F1) of Wardowski while other authors employed all three conditions. Working only with the fact that the function F is strictly increasing on (0, +infinity)(m), we obtain as a consequence new families of contractive conditions in the realm of vector-valued metric spaces of Perov's type. At the end of the article, we present an example that supports obtained theoretical results and genuinely generalizes several known results in existing literature.
PB  - MDPI, Basel
T2  - Axioms
T1  - Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type
IS  - 2
VL  - 10
DO  - 10.3390/axioms10020127
ER  - 

@article{
author = "Mirkov, Nikola and Radenović, Stojan and Radojević, Slobodan",
year = "2021",
abstract = "The main purpose of this article is to improve, generalize and complement some recently established results for Perov's type F-contractions. In our approach, we use only the property (F1) of Wardowski while other authors employed all three conditions. Working only with the fact that the function F is strictly increasing on (0, +infinity)(m), we obtain as a consequence new families of contractive conditions in the realm of vector-valued metric spaces of Perov's type. At the end of the article, we present an example that supports obtained theoretical results and genuinely generalizes several known results in existing literature.",
publisher = "MDPI, Basel",
journal = "Axioms",
title = "Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type",
number = "2",
volume = "10",
doi = "10.3390/axioms10020127"
}

Mirkov, N., Radenović, S.,& Radojević, S.. (2021). Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type. in Axioms
MDPI, Basel., 10(2).
https://doi.org/10.3390/axioms10020127

Mirkov N, Radenović S, Radojević S. Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type. in Axioms. 2021;10(2).
doi:10.3390/axioms10020127 .

Mirkov, Nikola, Radenović, Stojan, Radojević, Slobodan, "Some New Observations for F-Contractions in Vector-Valued Metric Spaces of Perov's Type" in Axioms, 10, no. 2 (2021),
https://doi.org/10.3390/axioms10020127 . .

TY  - JOUR
AU  - Savić, Ana
AU  - Fabiano, Nicola
AU  - Mirkov, Nikola
AU  - Sretenović, Aleksandra
AU  - Radenović, Stojan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3581
AB  - Using the approach of so-called c-sequences introduced by the fifth author in his recent work, we give much simpler and shorter proofs of multivalued Perov's type results with respect to the ones presented in the recently published paper by M. Abbas et al. Our proofs improve, complement, unify and enrich the ones from the recent papers. Further, in the last section of this paper, we correct and generalize the well-known Perov's fixed point result. We show that this result is in fact equivalent to Banach's contraction principle.
PB  - Amer Inst Mathematical Sciences-Aims, Springfield
T2  - AIMS Mathematics
T1  - Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph
EP  - 198
IS  - 1
SP  - 187
VL  - 7
DO  - 10.3934/math.2022011
ER  - 

@article{
author = "Savić, Ana and Fabiano, Nicola and Mirkov, Nikola and Sretenović, Aleksandra and Radenović, Stojan",
year = "2021",
abstract = "Using the approach of so-called c-sequences introduced by the fifth author in his recent work, we give much simpler and shorter proofs of multivalued Perov's type results with respect to the ones presented in the recently published paper by M. Abbas et al. Our proofs improve, complement, unify and enrich the ones from the recent papers. Further, in the last section of this paper, we correct and generalize the well-known Perov's fixed point result. We show that this result is in fact equivalent to Banach's contraction principle.",
publisher = "Amer Inst Mathematical Sciences-Aims, Springfield",
journal = "AIMS Mathematics",
title = "Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph",
pages = "198-187",
number = "1",
volume = "7",
doi = "10.3934/math.2022011"
}

Savić, A., Fabiano, N., Mirkov, N., Sretenović, A.,& Radenović, S.. (2021). Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph. in AIMS Mathematics
Amer Inst Mathematical Sciences-Aims, Springfield., 7(1), 187-198.
https://doi.org/10.3934/math.2022011

Savić A, Fabiano N, Mirkov N, Sretenović A, Radenović S. Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph. in AIMS Mathematics. 2021;7(1):187-198.
doi:10.3934/math.2022011 .

Savić, Ana, Fabiano, Nicola, Mirkov, Nikola, Sretenović, Aleksandra, Radenović, Stojan, "Some significant remarks on multivalued Perov type contractions on cone metric spaces with a directed graph" in AIMS Mathematics, 7, no. 1 (2021):187-198,
https://doi.org/10.3934/math.2022011 . .

TY  - CONF
AU  - Kastratović, Gordana
AU  - Vidanović, Nenad
AU  - Grbović, Aleksandar
AU  - Mirkov, Nikola
AU  - Rašuo, Boško
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3323
AB  - This paper discusses certain aspects of numerical simulation of crack propagation in wire ropes subjected to axial loading, with the aim to explore and to demonstrate the capacity, performances and difficulties of crack propagation modeling by usage of numerical computational methods in such complex structures. For this purpose, the finite element method (FEM) was used, and 3D numerical analyses were performed in Ansys Workbench software. In order to validate and verify performed numerical modeling, crack growth rate based on calculated stress intensity factors (SIFs) along the crack fronts was obtained for the model for which experimental results could be found in the available literature. Finally, using the advanced modeling techniques, the parametric 3D model of seven-wire strand was analyzed. Conducted analysis showed that FEM could be a powerful tool for fatigue life predictions in order to reduce the need for experiments, which are still the only successful method for fatigue life estimation of wire ropes.
PB  - Springer International Publishing Ag, Cham
C3  - Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019
T1  - Numerical Simulation of Crack Propagation in Seven-Wire Strand
EP  - 91
SP  - 76
VL  - 90
DO  - 10.1007/978-3-030-30853-7_5
ER  - 

@conference{
author = "Kastratović, Gordana and Vidanović, Nenad and Grbović, Aleksandar and Mirkov, Nikola and Rašuo, Boško",
year = "2020",
abstract = "This paper discusses certain aspects of numerical simulation of crack propagation in wire ropes subjected to axial loading, with the aim to explore and to demonstrate the capacity, performances and difficulties of crack propagation modeling by usage of numerical computational methods in such complex structures. For this purpose, the finite element method (FEM) was used, and 3D numerical analyses were performed in Ansys Workbench software. In order to validate and verify performed numerical modeling, crack growth rate based on calculated stress intensity factors (SIFs) along the crack fronts was obtained for the model for which experimental results could be found in the available literature. Finally, using the advanced modeling techniques, the parametric 3D model of seven-wire strand was analyzed. Conducted analysis showed that FEM could be a powerful tool for fatigue life predictions in order to reduce the need for experiments, which are still the only successful method for fatigue life estimation of wire ropes.",
publisher = "Springer International Publishing Ag, Cham",
journal = "Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019",
title = "Numerical Simulation of Crack Propagation in Seven-Wire Strand",
pages = "91-76",
volume = "90",
doi = "10.1007/978-3-030-30853-7_5"
}

Kastratović, G., Vidanović, N., Grbović, A., Mirkov, N.,& Rašuo, B.. (2020). Numerical Simulation of Crack Propagation in Seven-Wire Strand. in Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019
Springer International Publishing Ag, Cham., 90, 76-91.
https://doi.org/10.1007/978-3-030-30853-7_5

Kastratović G, Vidanović N, Grbović A, Mirkov N, Rašuo B. Numerical Simulation of Crack Propagation in Seven-Wire Strand. in Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019. 2020;90:76-91.
doi:10.1007/978-3-030-30853-7_5 .

Kastratović, Gordana, Vidanović, Nenad, Grbović, Aleksandar, Mirkov, Nikola, Rašuo, Boško, "Numerical Simulation of Crack Propagation in Seven-Wire Strand" in Computational and Experimental Approaches in Materials Science and Engineering, Cnntech 2019, 90 (2020):76-91,
https://doi.org/10.1007/978-3-030-30853-7_5 . .

TY  - JOUR
AU  - Živković, Goran
AU  - Mirkov, Nikola
AU  - Dakić, Dragoljub
AU  - Mladenović, Milica R.
AU  - Erić, Aleksandar M.
AU  - Erić, Milić D.
AU  - Rudonja, Nedžad
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1033
AB  - Za potrebe zagrevanja 1 ha plastenika na poljoprivrednom dobru u Padinskoj Skeli, koje se nalazi u okviru PKB korporacije, izgrađen je grejni sistem sa kotlom na biomasu, u kome se toplota dobija sagorevanjem balirane sojine slame. Zbog nestacionarnih efekata zagrevanja pojavila se potreba za uključivanjem akumulatora toplote u sistem grejanja. Ovaj rad ima za cilj numeričku i eksperimentalnu studiju izvršenu sa ciljem optimizacije akumulatora toplote u predmetnom grejnom sistemu, kao i optimizaciju celokupnog grejnog sistema. U akumulatoru toplote kapaciteta 100 m3, u kome se skladišti zagrejana voda, izvršena su merenja u 256 tačaka, kako u stacionarnom tako i u nestacionarnom režimu rada kotla. Analiza optimizacije je izvršena numeričkom simulacijom koja je obuhvatala i stacionarne i nestacionarne režime. Dobijeni rezultati pokazuju dobro poklapanje rezultata dobijenih eksperimentom i numeričkom simulacijom.
AB  - A 1.5 MW combustion facility burning large bales of soy straw has been built for the purpose of heating 1 ha of vegetable greenhouses located within the complex of Agricultural Plant PKB in Padinska Skela, Serbia. The paper addresses numerical and experimental study of temperature distribution in a cylindrical, 100 m3 (8 m high, 4 m in diameter) hot water storage tank. The water tank optimization, as well as optimization of the heating facility as a whole, were identified as the main goals of the study performed. Water temperature was measured by a temperature probe inserted in the tank. Measurements were conducted in 256 measurement points, both under steady and unsteady water flow conditions. Water tank optimization analysis was carried out utilizing both steady and unsteady state numerical simulation. The results obtained indicated good agreement between the experimental and computational data acquired.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Modeliranje strujno-termičkih procesa i optimizacija rada akumulatora toplote u grejnim sistemima sa toplovodnim kotlom na biomasu
T1  - Numerical simulation of thermo-fluid properties and optimization of hot water storage tank in biomass heating systems
EP  - 70
IS  - 2
SP  - 63
VL  - 38
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1033
ER  - 

@article{
author = "Živković, Goran and Mirkov, Nikola and Dakić, Dragoljub and Mladenović, Milica R. and Erić, Aleksandar M. and Erić, Milić D. and Rudonja, Nedžad",
year = "2010",
abstract = "Za potrebe zagrevanja 1 ha plastenika na poljoprivrednom dobru u Padinskoj Skeli, koje se nalazi u okviru PKB korporacije, izgrađen je grejni sistem sa kotlom na biomasu, u kome se toplota dobija sagorevanjem balirane sojine slame. Zbog nestacionarnih efekata zagrevanja pojavila se potreba za uključivanjem akumulatora toplote u sistem grejanja. Ovaj rad ima za cilj numeričku i eksperimentalnu studiju izvršenu sa ciljem optimizacije akumulatora toplote u predmetnom grejnom sistemu, kao i optimizaciju celokupnog grejnog sistema. U akumulatoru toplote kapaciteta 100 m3, u kome se skladišti zagrejana voda, izvršena su merenja u 256 tačaka, kako u stacionarnom tako i u nestacionarnom režimu rada kotla. Analiza optimizacije je izvršena numeričkom simulacijom koja je obuhvatala i stacionarne i nestacionarne režime. Dobijeni rezultati pokazuju dobro poklapanje rezultata dobijenih eksperimentom i numeričkom simulacijom., A 1.5 MW combustion facility burning large bales of soy straw has been built for the purpose of heating 1 ha of vegetable greenhouses located within the complex of Agricultural Plant PKB in Padinska Skela, Serbia. The paper addresses numerical and experimental study of temperature distribution in a cylindrical, 100 m3 (8 m high, 4 m in diameter) hot water storage tank. The water tank optimization, as well as optimization of the heating facility as a whole, were identified as the main goals of the study performed. Water temperature was measured by a temperature probe inserted in the tank. Measurements were conducted in 256 measurement points, both under steady and unsteady water flow conditions. Water tank optimization analysis was carried out utilizing both steady and unsteady state numerical simulation. The results obtained indicated good agreement between the experimental and computational data acquired.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Modeliranje strujno-termičkih procesa i optimizacija rada akumulatora toplote u grejnim sistemima sa toplovodnim kotlom na biomasu, Numerical simulation of thermo-fluid properties and optimization of hot water storage tank in biomass heating systems",
pages = "70-63",
number = "2",
volume = "38",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1033"
}

Živković, G., Mirkov, N., Dakić, D., Mladenović, M. R., Erić, A. M., Erić, M. D.,& Rudonja, N.. (2010). Modeliranje strujno-termičkih procesa i optimizacija rada akumulatora toplote u grejnim sistemima sa toplovodnim kotlom na biomasu. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 38(2), 63-70.
https://hdl.handle.net/21.15107/rcub_machinery_1033

Živković G, Mirkov N, Dakić D, Mladenović MR, Erić AM, Erić MD, Rudonja N. Modeliranje strujno-termičkih procesa i optimizacija rada akumulatora toplote u grejnim sistemima sa toplovodnim kotlom na biomasu. in FME Transactions. 2010;38(2):63-70.
https://hdl.handle.net/21.15107/rcub_machinery_1033 .

Živković, Goran, Mirkov, Nikola, Dakić, Dragoljub, Mladenović, Milica R., Erić, Aleksandar M., Erić, Milić D., Rudonja, Nedžad, "Modeliranje strujno-termičkih procesa i optimizacija rada akumulatora toplote u grejnim sistemima sa toplovodnim kotlom na biomasu" in FME Transactions, 38, no. 2 (2010):63-70,
https://hdl.handle.net/21.15107/rcub_machinery_1033 .