Original title: Prediction of flow over a backward-facing step in the Star CD code using various turbulence models
Authors: Štěpaníková, D. ; Příhoda, Jaromír
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2009, Praha (CZ), 2009-02-25 / 2009-02-26
Year: 2009
Language: eng
Abstract: 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.
Keywords: flow over backward-facing step; flow separation
Project no.: CEZ:AV0Z20760514 (CEP), GA103/09/0977 (CEP)
Funding provider: GA ČR
Host item entry: Proceedings Conference Topical Problems of Fluid Mechanics 2009, ISBN 978-80-87012-19-2

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0175737

Permalink: http://www.nusl.cz/ntk/nusl-40496


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers