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Article Dans Une Revue Flow, Turbulence and Combustion Année : 2013

Comparison of Subgrid-scale Viscosity Models and Selective Filtering Strategy for Large-eddy Simulations

Résumé

Explicitly filtered large-eddy simulations (LES), combining high-accuracy schemes with the use of a selective filtering without adding an explicit subgrid-scales (SGS) model, are carried out for the Taylor-Green-vortex and the supersonic-boundary-layer cases. First, the present approach is validated against direct numerical simulation (DNS) results. Subsequently, several SGS models are implemented in order to investigate if they can improve the initial filter-based methodology. It is shown that the most accurate results are obtained when the filtering is used alone as an implicit model, and for a minimal cost. Moreover, the tests for the Taylor-Green vortex indicate that the discretization error from the numerical methods, notably the dissipation error from the high-order filtering, can have a greater influence than the SGS models.
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Dates et versions

hal-01069582 , version 1 (29-09-2014)

Identifiants

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Guillaume Aubard, Pedro Stefanin Volpiani, Xavier Gloerfelt, Jean-Christophe Robinet. Comparison of Subgrid-scale Viscosity Models and Selective Filtering Strategy for Large-eddy Simulations. Flow, Turbulence and Combustion, 2013, 91 (3), pp.497-518. ⟨10.1007/s10494-013-9485-5⟩. ⟨hal-01069582⟩
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