Automatic Hybrid RANS/LES Strategy for Industrial CFD
Chapitre d'ouvrage scientifique
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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Multiple-correction hybrid k -exact schemes for high-order compressible RANS-LES simulations on fully unstructured grids Article dans une revue avec comité de lecturePONT, Grégoire; BRENNER, Pierre; CINNELLA, Paola; MAUGARS, Bruno; ROBINET, Jean-Christophe (Elsevier, 2017)A Godunov's type unstructured finite volume method suitable for highly compressible turbulent scale-resolving simulations around complex geometries is constructed by using a successive correction technique. First, a family ...
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