Title: Synthetic turbulent inflow conditions based on a vortex method for large-eddy simulation

Authors: Sofiane Benhamadouche, Nicolas Jarrin, Yacine Addad, Dominique Laurence

Addresses: EDF R&D Dept. MFTT, 06 Quai Watier, 78401 Chatou Cedex, France. ' UMIST, MAME Dept. Thermo-Fluids div., Manchester M60 1QD, UK. ' UMIST, MAME Dept. Thermo-Fluids div., Manchester M60 1QD, UK. ' EDF R&D Dept. MFTT, 06 Quai Watier, 78401 Chatou Cedex, France

Abstract: The generation of |synthetic turbulence| for inflow conditions in Large Eddy Simulation is investigated. The method is based on a 2D vortex method for the lateral components of the fluctuating velocity and a 1D Langevin equation for the streamwise velocity component, mimicking a Restress transport model. Channel flow at Re_τ = 395 and pipe flow at Re_τ = 360 are used to test the |synthetic turbulence| alone in the 2D inlet plane, then LES computations are run with these inlet conditions. Finally, the method is applied to a backward facing step with and without heat transfer.

Keywords: large-eddy simulations; synthetic turbulence; inflow boundary conditions; channels; pipe flows; back-step flows; CFD; computational fluid dynamics; turbulent flows.

DOI: 10.1504/PCFD.2006.009482

Progress in Computational Fluid Dynamics, An International Journal, 2006 Vol.6 No.1/2/3, pp.50 - 57

Published online: 05 Apr 2006 *

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