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SC²S Colloquium - January 12, 2012

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Date: Januar 12, 2012
Room: 02.07.023
Time: 15:00 am, 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 theses I will implement an improved version of DES into the parallel Computational Mechanics Code Alya hosted at the Barcelona Supercomputing Center (BSC). In my first talk just before going abroad I will give an overview on modeling aspects in LES, RANS and DES.