Print Email Facebook Twitter Simulation of three-dimensional separation with a zonal near-wall approximation Part of: ECCOMAS CFD 2006: Proceedings of the European Conference on Computational Fluid Dynamics· list the conference papers Title Simulation of three-dimensional separation with a zonal near-wall approximation Author Tessicini, F. Li, N. Leschziner, M.A. Date 2006-09-08 Abstract The focus of the paper is on the performance of an approximate 'zonal' near- wall treatment applied within a LES strategy to the simulation of flow separating from a three-dimensional hill at high Reynolds numbers. In the zonal scheme, the state of the near-wall layer of the flow is described by parabolized Navier-Stokes equations solved on a sub-grid embedded within a global LES mesh. The solution of the boundary-layer equations returns the wall shear stress to the LES domain as a wall boundary condition. Simulations are presented for grids containing between 1.5 and 9.6 million nodes, the one on the finest grid being a pure LES. The comparisons included demonstrate that the zonal scheme provides a satisfactory representation of most flow properties, even on the coarsest grid, whereas the pure LES on the coarsest grid completely fails to capture the separation process. Subject LESnear-wall modellingzonal two-layer modelling To reference this document use: http://resolver.tudelft.nl/uuid:41e8615d-5c37-449f-aa36-6fdc43bb5774 Part of collection Conference proceedings Document type conference paper Rights (c) 2006 Tessicini, F.; Li, N.; Leschziner, M.A. Files PDF Tessicini.pdf 3.7 MB Close viewer /islandora/object/uuid:41e8615d-5c37-449f-aa36-6fdc43bb5774/datastream/OBJ/view