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Automatic Hybrid RANS/LES Strategy for Industrial CFD

Chapitre d'ouvrage scientifique
Author
PONT, Grégoire
134975 Laboratoire de Dynamique des Fluides [DynFluid]
CINNELLA, Paola
134975 Laboratoire de Dynamique des Fluides [DynFluid]
BRENNER, Pierre
407973 Airbus Defence and Space [Toulouse]
492366 Airbus Safran Launchers
ccROBINET, Jean-Christophe
12854 Agence Nationale pour la Gestion des Déchets Radioactifs [ANDRA]

URI
http://hdl.handle.net/10985/15320
Date
2015

Abstract

An automatic HRL (Hybrid RANS/LES) strategy is investigated in FLUSEPA, a finite-volume solver developed by Airbus Defense and Space. A HRL turbulence model is coupled to a high-order hybrid numerical approximation method. Concerning the turbulence model, the well-known k − ε two equations RANS turbulence model is sensitized to the grid as suggested by Perot and Gadebusch (Phy Fluids 19:1–11, 2007). Concerning the numerical strategy, a third-order accurate upwind approximation method is locally re-centered in vortex dominated regions to achieve non-dissipative fourth-order accuracy. Results are presented for a 2D backward facing step and an an axisymmetry backward facing step, which represent good prototypes of after body flows.

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