SC²S Colloquium - May 31, 2012

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Date: Mai 31, 2012
Room: 02.07.023
Time: 5 pm, s.t.

Benjamin Uekermann: Detached-Eddy Simulation - a hybrid method for Turbulence Simulation

Fluid simulation for complex flows, like those needed in aeronautics with high Reynolds numbers and massively separated flows, demand hybrid methods. While large-eddy simulation (LES) is too costly in boundary layers, Reynolds-averaged Navier-Stokes modeling (RANS) does not represent the physics well enough to handle large separation regions, e.g. past vehicles. Detached-eddy simulation (DES), first proposed in 1997, is a hybrid RANS-LES-approach which avoids an a-priori selection of zones. During my diploma thesis, we implemented an improved version of DES into the parallel computational mechanics code ALYA hosted at the Barcelona Supercomputing Center (BSC). In my second talk, I will focus on the numerical results.