Anisotropic linear forcing for synthetic turbulence generation in hybrid RANS/LES modelling - Archive ouverte HAL
Communication Dans Un Congrès Année : 2012

Anisotropic linear forcing for synthetic turbulence generation in hybrid RANS/LES modelling

Résumé

A new body force is proposed, aiming at imposing to a large eddy simulation low order statistics in some specific regions where the forcing is applied. The forced LES presents a realistic turbulence with imposed mean velocity and Reynolds stress tensor of any anisotropy. It is emphasized that this new forcing – the Anisotropic Linear Forcing (ALF) – generalizes several body forces proposed in the past decade. The influence of the parameters of the forcing is discussed. An application of ALF for synthetic turbulence generation in zonal RANS/LES computation of channel flow is presented. The method enables an efficient spatial developpement of the flow in the LES domain, without prescribing any fluctuations at the inlet boundary.
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Dates et versions

hal-02129214 , version 1 (14-05-2019)

Identifiants

  • HAL Id : hal-02129214 , version 1

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Benoît de Laage de Meux, Bruno Audebert, Remi Manceau. Anisotropic linear forcing for synthetic turbulence generation in hybrid RANS/LES modelling. 9th ERCOFTAC Int. Symp. on Eng. Turb. Modelling and Measurements, 2012, Thessaloniki, Greece. ⟨hal-02129214⟩
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