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Prediction of flow over a backward-facing step in the Star CD code using various turbulence models
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SYSNO ASEP 0329802 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Prediction of flow over a backward-facing step in the Star CD code using various turbulence models Author(s) Štěpaníková, D. (CZ)
Příhoda, Jaromír (UT-L) RID, ORCIDSource Title Proceedings Conference Topical Problems of Fluid Mechanics 2009. - Praha : Ústav termomechaniky AV ČR, v. v. i., 2009 / Příhoda J. ; Kozel K. - ISBN 978-80-87012-19-2 Pages s. 95-98 Number of pages 4 s. Action Topical Problems of Fluid Mechanics 2009 Event date 25.02.2009-26.02.2009 VEvent location Praha Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords flow over backward-facing step ; flow separation Subject RIV BK - Fluid Dynamics R&D Projects GA103/09/0977 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation The comparison of several turbulence models was carried out by the commercial software Star CD for turbulent flow over a backward-facing step with the aim to assess their ability to accurately predict separated flow. Presented simulation was focused on the two aspects, namely the effect of the inlet boundary conditions on the prediction and the relaxation of the shear layer behind the reattachment. Used modifications of two-equation models, especially the non-linear k-eps model and the v2-f model, show some advantages in comparison with the standard k-eps model, but none of used modifications gives positively a better agreement with experimental data than the SST model. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2010
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