Hybrid simulation of high-Reynolds number flows relying on a variational multiscale model

Abstract : We are interested in the study and improvement of the LES component in hybrid RANS-LES formulations. These models are not designed for blunt-body flows with laminar boundary layers, but it is interesting to examine how they behave in that case. A DDES model is compared with a dynamic Variational multi-scale (DVMS) LES model for two subcritical flows past a cylinder. We then propose a hybridation restricting to DVMS in LES regions. The performances of the different options are compared for subcritical flows and for a flow around a tandem cylinder.
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Submitted on : Friday, December 9, 2016 - 5:46:43 PM
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Emmanuelle Itam, Stephen Wornom, Bruno Koobus, Alain Dervieux. Hybrid simulation of high-Reynolds number flows relying on a variational multiscale model. 6th Symposium on Hybrid RANS-LES Methods , Sep 2016, Strasbourg, France. ⟨hal-01413453⟩

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