THMT-12. Proceedings of the Seventh International Symposium On Turbulence Heat and Mass Transfer
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal
ISBN Print: 978-1-56700-302-4
ISSN: 2377-2816
Refinement of a hybrid LES−URANS approach for non-equilibrium turbulent flows
pages 341-352
DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.380
Краткое описание
The paper is concerned with a hybrid LES−URANS method. An explicit algebraic Reynolds stress model for the near−wall region is dynamically coupled with a one−equation subgrid−scale model for the outer LES region. Recently, the model for the dissipation close to the wall was refined by splitting the dissipation rate into a homogeneous and an inhomogeneous part and expressing both terms by exact formulations. The improved model is applied to different test cases including non−equilibrium turbulent flows with separations, e.g., the periodic hill flow and the flow in two 3−D diffusers.