A hybrid rans-les method with compressible k-omegasstsas turbulence model for high reynolds number flow applications
Апстракт
Three-dimensional, compressible, viscous and transient transonic turbulent flow over the wing was simulated by a hybrid RANS-LES modelling method, combined with the compressible k-omegaSSTSAS turbulence model. This approach is based on dividing the contribution of the fluctuating and the averaged velocity fields in the subgrid tensor, and modelling each of them with its corresponding turbulent viscosity. The "RANS mode" is used in flow field domains which can be treated with acceptable accuracy as relatively steady, such as in the boundary layer, while the "LES mode" is applied in the dominantly unsteady regions, far from the wing. Discretization of the governing equations is performed by Finite Volume Method on unstructured mesh. The method has been verified on the Onera M6 wing. The parallelization is achieved by decomposing the mesh into sub-domains and using the Open MPI technology. The implementation of turbulence model has been done using OpenFOAM. The flow simulation was also pe...rformed using ANSYS Fluent, and the results of the two methods were compared mutually, and with the Onera M6 experiment.
Кључне речи:
unstructured meshes / transonic turbulent flow / RANS-LES / parallel computing / OpenFOAM / k-omegaSSTSAS / high Reynolds numbers / finite volume methodИзвор:
Tehnički vjesnik, 2015, 22, 5, 1237-1245Издавач:
- Univ Osijek, Tech Fac, Slavonski Brod
DOI: 10.17559/TV-20140404130058
ISSN: 1330-3651
WoS: 000363986400021
Scopus: 2-s2.0-84946016016
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Sekutkovski, Bojan AU - Kostić, Ivan AU - Stefanović, Zoran AU - Simonović, Aleksandar AU - Kostić, Olivera PY - 2015 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2245 AB - Three-dimensional, compressible, viscous and transient transonic turbulent flow over the wing was simulated by a hybrid RANS-LES modelling method, combined with the compressible k-omegaSSTSAS turbulence model. This approach is based on dividing the contribution of the fluctuating and the averaged velocity fields in the subgrid tensor, and modelling each of them with its corresponding turbulent viscosity. The "RANS mode" is used in flow field domains which can be treated with acceptable accuracy as relatively steady, such as in the boundary layer, while the "LES mode" is applied in the dominantly unsteady regions, far from the wing. Discretization of the governing equations is performed by Finite Volume Method on unstructured mesh. The method has been verified on the Onera M6 wing. The parallelization is achieved by decomposing the mesh into sub-domains and using the Open MPI technology. The implementation of turbulence model has been done using OpenFOAM. The flow simulation was also performed using ANSYS Fluent, and the results of the two methods were compared mutually, and with the Onera M6 experiment. PB - Univ Osijek, Tech Fac, Slavonski Brod T2 - Tehnički vjesnik T1 - A hybrid rans-les method with compressible k-omegasstsas turbulence model for high reynolds number flow applications EP - 1245 IS - 5 SP - 1237 VL - 22 DO - 10.17559/TV-20140404130058 ER -
@article{ author = "Sekutkovski, Bojan and Kostić, Ivan and Stefanović, Zoran and Simonović, Aleksandar and Kostić, Olivera", year = "2015", abstract = "Three-dimensional, compressible, viscous and transient transonic turbulent flow over the wing was simulated by a hybrid RANS-LES modelling method, combined with the compressible k-omegaSSTSAS turbulence model. This approach is based on dividing the contribution of the fluctuating and the averaged velocity fields in the subgrid tensor, and modelling each of them with its corresponding turbulent viscosity. The "RANS mode" is used in flow field domains which can be treated with acceptable accuracy as relatively steady, such as in the boundary layer, while the "LES mode" is applied in the dominantly unsteady regions, far from the wing. Discretization of the governing equations is performed by Finite Volume Method on unstructured mesh. The method has been verified on the Onera M6 wing. The parallelization is achieved by decomposing the mesh into sub-domains and using the Open MPI technology. The implementation of turbulence model has been done using OpenFOAM. The flow simulation was also performed using ANSYS Fluent, and the results of the two methods were compared mutually, and with the Onera M6 experiment.", publisher = "Univ Osijek, Tech Fac, Slavonski Brod", journal = "Tehnički vjesnik", title = "A hybrid rans-les method with compressible k-omegasstsas turbulence model for high reynolds number flow applications", pages = "1245-1237", number = "5", volume = "22", doi = "10.17559/TV-20140404130058" }
Sekutkovski, B., Kostić, I., Stefanović, Z., Simonović, A.,& Kostić, O.. (2015). A hybrid rans-les method with compressible k-omegasstsas turbulence model for high reynolds number flow applications. in Tehnički vjesnik Univ Osijek, Tech Fac, Slavonski Brod., 22(5), 1237-1245. https://doi.org/10.17559/TV-20140404130058
Sekutkovski B, Kostić I, Stefanović Z, Simonović A, Kostić O. A hybrid rans-les method with compressible k-omegasstsas turbulence model for high reynolds number flow applications. in Tehnički vjesnik. 2015;22(5):1237-1245. doi:10.17559/TV-20140404130058 .
Sekutkovski, Bojan, Kostić, Ivan, Stefanović, Zoran, Simonović, Aleksandar, Kostić, Olivera, "A hybrid rans-les method with compressible k-omegasstsas turbulence model for high reynolds number flow applications" in Tehnički vjesnik, 22, no. 5 (2015):1237-1245, https://doi.org/10.17559/TV-20140404130058 . .