TY  - CONF
AU  - Ćoćić, Aleksandar
AU  - Ratter, Heiko
AU  - Lečić, Milan
AU  - Gabi, Martin
PY  - 2014
UR  - https://openfoam-extend.sourceforge.net/OpenFOAM_Workshops/OFW9_2014_Zagreb/download.htm
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5524
AB  - In this investigation OpenFOAM is used for numerical computations of complex flows
in axial and radial fans. Because of the low Mach number and small pressure differences,
air is considered as incompressible. Turbulence is modeled using RANS approach, where
performance of several turbulence models are tested. Both steady and unsteady computations are performed. For steady computations frozen rotor approach is used, with
GGI interpolation[2] on the stator-rotor interfaces. In this case, in order to save compu-
tational time, the computational domain of the rotor is one segment (blade passage) of
the complete fan. At lateral boundaries, cyclic boundary condition is used. The process
of determination of the characteristic curve, starting from CAD geometry of the fan, is
completely automated with Python scripts. Numerical results of characteristic curve are
compared with experimental measurements. For block-structured, hexahedral grid generation commercial software ICEM CFD was used. Also, OpenFOAM results are compared
with results obtained with ANSYS-CFX software. For unsteady computations, complete flow domain was modeled, with relative mesh motion (i.e. rotation) in rotor domain.
C3  - OFW 2014
T1  - Numerical Investigations Of Flows in Axial and Radial Fans Using OpenFOAM
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5524
ER  - 

@conference{
author = "Ćoćić, Aleksandar and Ratter, Heiko and Lečić, Milan and Gabi, Martin",
year = "2014",
abstract = "In this investigation OpenFOAM is used for numerical computations of complex flows
in axial and radial fans. Because of the low Mach number and small pressure differences,
air is considered as incompressible. Turbulence is modeled using RANS approach, where
performance of several turbulence models are tested. Both steady and unsteady computations are performed. For steady computations frozen rotor approach is used, with
GGI interpolation[2] on the stator-rotor interfaces. In this case, in order to save compu-
tational time, the computational domain of the rotor is one segment (blade passage) of
the complete fan. At lateral boundaries, cyclic boundary condition is used. The process
of determination of the characteristic curve, starting from CAD geometry of the fan, is
completely automated with Python scripts. Numerical results of characteristic curve are
compared with experimental measurements. For block-structured, hexahedral grid generation commercial software ICEM CFD was used. Also, OpenFOAM results are compared
with results obtained with ANSYS-CFX software. For unsteady computations, complete flow domain was modeled, with relative mesh motion (i.e. rotation) in rotor domain.",
journal = "OFW 2014",
title = "Numerical Investigations Of Flows in Axial and Radial Fans Using OpenFOAM",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5524"
}

Ćoćić, A., Ratter, H., Lečić, M.,& Gabi, M.. (2014). Numerical Investigations Of Flows in Axial and Radial Fans Using OpenFOAM. in OFW 2014.
https://hdl.handle.net/21.15107/rcub_machinery_5524

Ćoćić A, Ratter H, Lečić M, Gabi M. Numerical Investigations Of Flows in Axial and Radial Fans Using OpenFOAM. in OFW 2014. 2014;.
https://hdl.handle.net/21.15107/rcub_machinery_5524 .

Ćoćić, Aleksandar, Ratter, Heiko, Lečić, Milan, Gabi, Martin, "Numerical Investigations Of Flows in Axial and Radial Fans Using OpenFOAM" in OFW 2014 (2014),
https://hdl.handle.net/21.15107/rcub_machinery_5524 .

TY  - CONF
AU  - Čantrak, Đorđe
AU  - Gabi, Martin
AU  - Janković, Novica
AU  - Čantrak, Svetislav
PY  - 2012
UR  - https://onlinelibrary.wiley.com/doi/pdf/10.1002/pamm.201210237
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6349
AB  - Turbulence structure of swirling flows is being investigated in this paper, on the basis of experimental, self conducted measurements, and theoretical and numerical results. Turbulent swirling flows are extremely inhomogeneous, three dimensional and
anisotropic. The aim of this paper is to investigate significant influence of swirl onto statistical parameters and non-gradient
turbulent transfer. Contemporary optical measuring techniques two component laser Doppler anemometry (LDA) and stereo
particle image velocimetry (SPIV) have been applied
PB  - WILEY
C3  - Proceedings in Applied Mathematics & Mechanics
T1  - Investigation of Structure and Non-Gradient Turbulent Transfer in Swirl Flows
SP  - 497
VL  - 12
DO  - 10.1002/pamm.201210237
ER  - 

@conference{
author = "Čantrak, Đorđe and Gabi, Martin and Janković, Novica and Čantrak, Svetislav",
year = "2012",
abstract = "Turbulence structure of swirling flows is being investigated in this paper, on the basis of experimental, self conducted measurements, and theoretical and numerical results. Turbulent swirling flows are extremely inhomogeneous, three dimensional and
anisotropic. The aim of this paper is to investigate significant influence of swirl onto statistical parameters and non-gradient
turbulent transfer. Contemporary optical measuring techniques two component laser Doppler anemometry (LDA) and stereo
particle image velocimetry (SPIV) have been applied",
publisher = "WILEY",
journal = "Proceedings in Applied Mathematics & Mechanics",
title = "Investigation of Structure and Non-Gradient Turbulent Transfer in Swirl Flows",
pages = "497",
volume = "12",
doi = "10.1002/pamm.201210237"
}

Čantrak, Đ., Gabi, M., Janković, N.,& Čantrak, S.. (2012). Investigation of Structure and Non-Gradient Turbulent Transfer in Swirl Flows. in Proceedings in Applied Mathematics & Mechanics
WILEY., 12, 497.
https://doi.org/10.1002/pamm.201210237

Čantrak Đ, Gabi M, Janković N, Čantrak S. Investigation of Structure and Non-Gradient Turbulent Transfer in Swirl Flows. in Proceedings in Applied Mathematics & Mechanics. 2012;12:497.
doi:10.1002/pamm.201210237 .

Čantrak, Đorđe, Gabi, Martin, Janković, Novica, Čantrak, Svetislav, "Investigation of Structure and Non-Gradient Turbulent Transfer in Swirl Flows" in Proceedings in Applied Mathematics & Mechanics, 12 (2012):497,
https://doi.org/10.1002/pamm.201210237 . .

TY  - CONF
AU  - Mattern, Philipp
AU  - Sieber, Sten
AU  - Čantrak, Đorđe
AU  - Froehlig, Friedrich
AU  - Caglar, Saban
AU  - Gabi, Martin
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6348
AB  - This paper deals with the incompressible turbulent swirl flow behind an axial fan without guide
vanes in a straight circular duct. The authors used High-Speed-Stereo-Particle Image Velocimetry (HSS-PIV) to visualise and quantify the flow in the duct downstream an axial fan. The intention was to document and to help young engineers understanding the complex flow pattern. The
presented energy loss coefficients for a swirl flow along a straight circular duct could be used to
complement the calculation of the loss allowances in ISO 5801.
C3  - Fan 2012, International Conference on Fan Noise, Technology and Numerical Methods, Senlis, France, 18.04.-20.04.2012., CD Proceedings
T1  - Investigations on the Swirl Flow Caused by an Axial Fan: A Contribution to the Revision of ISO 5801
SP  - fan2012-68-MATTERN
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6348
ER  - 

@conference{
author = "Mattern, Philipp and Sieber, Sten and Čantrak, Đorđe and Froehlig, Friedrich and Caglar, Saban and Gabi, Martin",
year = "2012",
abstract = "This paper deals with the incompressible turbulent swirl flow behind an axial fan without guide
vanes in a straight circular duct. The authors used High-Speed-Stereo-Particle Image Velocimetry (HSS-PIV) to visualise and quantify the flow in the duct downstream an axial fan. The intention was to document and to help young engineers understanding the complex flow pattern. The
presented energy loss coefficients for a swirl flow along a straight circular duct could be used to
complement the calculation of the loss allowances in ISO 5801.",
journal = "Fan 2012, International Conference on Fan Noise, Technology and Numerical Methods, Senlis, France, 18.04.-20.04.2012., CD Proceedings",
title = "Investigations on the Swirl Flow Caused by an Axial Fan: A Contribution to the Revision of ISO 5801",
pages = "fan2012-68-MATTERN",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6348"
}

Mattern, P., Sieber, S., Čantrak, Đ., Froehlig, F., Caglar, S.,& Gabi, M.. (2012). Investigations on the Swirl Flow Caused by an Axial Fan: A Contribution to the Revision of ISO 5801. in Fan 2012, International Conference on Fan Noise, Technology and Numerical Methods, Senlis, France, 18.04.-20.04.2012., CD Proceedings, fan2012-68-MATTERN.
https://hdl.handle.net/21.15107/rcub_machinery_6348

Mattern P, Sieber S, Čantrak Đ, Froehlig F, Caglar S, Gabi M. Investigations on the Swirl Flow Caused by an Axial Fan: A Contribution to the Revision of ISO 5801. in Fan 2012, International Conference on Fan Noise, Technology and Numerical Methods, Senlis, France, 18.04.-20.04.2012., CD Proceedings. 2012;:fan2012-68-MATTERN.
https://hdl.handle.net/21.15107/rcub_machinery_6348 .

Mattern, Philipp, Sieber, Sten, Čantrak, Đorđe, Froehlig, Friedrich, Caglar, Saban, Gabi, Martin, "Investigations on the Swirl Flow Caused by an Axial Fan: A Contribution to the Revision of ISO 5801" in Fan 2012, International Conference on Fan Noise, Technology and Numerical Methods, Senlis, France, 18.04.-20.04.2012., CD Proceedings (2012):fan2012-68-MATTERN,
https://hdl.handle.net/21.15107/rcub_machinery_6348 .