Commun. Comput. Phys., 5 (2009), pp. 635-648.


Spectral Vanishing Viscosity Stabilized LES of the Ahmed Body Turbulent Wake

M. Minguez 1, R. Pasquetti 2*, E. Serre 3

1 Lab. J.A. Dieudonne, UMR CNRS 6621, Universite de Nice-Sophia Antipolis, 06200 Nice, France; and Lab. MSNM-GP, UMR CNRS 6181, Universite de Provence, 13451 Marseille, France.
2 Lab. J.A. Dieudonne, UMR CNRS 6621, Universite de Nice-Sophia Antipolis, 06200 Nice, France.
3 Lab. MSNM-GP, UMR CNRS 6181, Universite de Provence, 13451 Marseille, France.

Received 26 September 2007; Accepted (in revised version) 31 March 2008
Available online 1 August 2008

Abstract

The paper addresses the Large-Eddy Simulation (LES) of the turbulent wake of the Ahmed car model. To this end we use a Fourier-Chebyshev multi-domain solver and the LES capability is implemented through the use of the Spectral Vanishing Viscosity (SVV) method, completed with a near-wall correction. A "pseudo-penalization" technique is used to model the bluff body. Comparisons of the present SVV-LES results with the experiments and also with a more classical Finite Volume LES are provided.

AMS subject classifications: 76D25, 76M22
Key words: Large-eddy simulation, spectral vanishing viscosity, spectral methods, wakes, turbulence.

*Corresponding author.
Email: minguez@l3m.univ-mrs.fr (M. Minguez), richard.pasquetti@unice.fr (R. Pasquetti), eric.serre@l3m.univ-mrs.fr (E. Serre)
 

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