Parallel Simulation of Complex Unsteady Flows with Variational Multiscale LES and Hybrid RANS/LES

Hilde Ouvrard 1 Bruno Koobus 1, 2 Maria Vittoria Salvetti 3 Simone Camarri 3 Stephen Wornom 2 Alain Dervieux 2
1 Département de Mathématiques [Montpellier]
2 TROPICS - Program transformations for scientific computing
CRISAM - Inria Sophia Antipolis - Méditerranée
3 DIA - Dipartimento Ingegneria Aerospaziale "Lucio Lazzarino"
Abstract : We study a new hybrid RANS/Variational Multiscale LES (VMS-LES) model for bluff body flows. The simulations have been carried out using a parallelized solver, based on a mixed \textcolor{Black}{finite} element/\textcolor{Black}{finite} volume formulation on unstructured grids. Parallel performances are analysed. The behavior of a VMS-LES model with different subgrid scale models is investigated for the flow past a circular cylinder at Reynolds number {\it Re} =3900. Second, a new strategy for blending RANS and LES methods in a hybrid model is described and applied to the simulation of the flow around a circular cylinder at {\it Re} = 140000.
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Rapport
[Research Report] RR-6917, INRIA. 2009, pp.17
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Hilde Ouvrard, Bruno Koobus, Maria Vittoria Salvetti, Simone Camarri, Stephen Wornom, et al.. Parallel Simulation of Complex Unsteady Flows with Variational Multiscale LES and Hybrid RANS/LES. [Research Report] RR-6917, INRIA. 2009, pp.17. 〈inria-00381570〉

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