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Communication Dans Un Congrès Année : 2008

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

Résumé

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 element/volume formulation on unstructured grids. First, the behavior of a VMS-LES model with different subgrid scale models is investigated for the flow past a circular cylinder at Reynolds number 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 Re = 140000.

Dates et versions

hal-00821099 , version 1 (07-05-2013)

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Hilde Ouvrard, Bruno Koobus, Maria-Vittoria Salvetti, Simone Camarri, Alain Dervieux. Variational Multiscale LES and Hybrid RANS/LES Parallel Simulation of Complex Unsteady Flows. VECPAR 2008 - 8th International Meeting High Performance Computing for Computational Science, 2008, Toulouse, France. pp.465-478, ⟨10.1007/978-3-540-92859-1_41⟩. ⟨hal-00821099⟩
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