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

Emmanuelle Itam; Stephen Wornom; Bruno Koobus; Alain Dervieux

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

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

Emmanuelle Itam, Stephen Wornom, Bruno Koobus et Alain Dervieux

6th Symposium on Hybrid RANS-LES Methods (Strasbourg, France, 26/09/2016–28/09/2016)

Résumé

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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Titre: Hybrid simulation of high-Reynolds number flows relying on a variational multiscale model
Créateurs - sans rôle: Emmanuelle Itam - Université de Montpellier, Institut Montpelliérain Alexander Grothendieck - IMAG
Stephen Wornom - Transformations et outils informatiques pour le calcul scientifique
Bruno Koobus - Université de Montpellier, Institut Montpelliérain Alexander Grothendieck - IMAG
Alain Dervieux - Transformations et outils informatiques pour le calcul scientifique
Colloque: 6th Symposium on Hybrid RANS-LES Methods (Strasbourg, France, 26/09/2016–28/09/2016)
Identifiants: 99153359309311
Unité académique: Institut Montpelliérain Alexander Grothendieck - IMAG
Langue: English
Type de ressource: Conference proceeding
Champs locaux: hal-01413453