DOI: 10.1615/TSFP7
A DYNAMIC PROCEDURE FOR ADVANCED SUBGRID-SCALE MODELS AND WALL-BOUNDED FLOWS
Краткое описание
Large Eddy Simulations (LES) in complex geometries require advanced models able to take into account the properties of the turbulence, variations of the mesh resolution and the accuracy of numerical schemes. In this study, a recently developed subgrid scale (SGS) model that takes into account several properties of the turbulence is used and combined with a global dynamic procedure suitable for such an advanced SGS model. A modification is introduced into the global procedure to account for solid boundaries. Validations are first performed on academic cases: an homogeneous isotropic turbulence and a turbulent channel. In addition, the potential of this global dynamic formulation is investigated on a more complex experimental test case performed at IFPEn. This test case corresponds to an hot unsteady impinging jet in presence of a cold cross flow. The resulting model gives fairly good results on the different configurations and does not require any homogeneous directions nor clipping.