Parallel multi-domain Large-Eddy simulation of the flow over a backward-facing step at Re=5100

The present article describes the recent developments carried out at the von Kármán Institute concerning the use of domain decomposition techniques as applied to the space filtered incompressible Navier-Stokes equations for the simulation of turbulent flows in complex geometries. Issues related to the numerical method, based on a grid staggered velocity pressure representations, are addressed, with special emphasis on the solution strategy of the elliptic kernel. Numerical results are presented for the flow over a backward facing step for which extensive and accurate DNS data are available in literature. © 2002 Kluwer Academic Publishers