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Th`ese de Doctorat L'ECOLE CENTRALE DE LYON Ecole Doctorale ...

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4.2. INFLUENCE DU MODÈLE <strong>DE</strong> SOUS-MAILLE SUR LES CORRÉLATIONS <strong>DE</strong> LA VITESSE EN UN-POINTET EN <strong>DE</strong>UX-TEMPS10.8DNSLESLES + Sto.Ruu (Lagrange)0.60.40.200 0.2 0.4 0.6 0.8 1t(s)Figure 4.19: Corrélation <strong>de</strong> vitesse Lagrangienne en LES. Cas B 2 , LES 64 3 , Re λ = 94 .Modèle <strong>de</strong> sous-maille <strong>de</strong> Cui-Shao.11LESLES + Sto.LESLES + Sto.0.80.8Ruu (Lagrange)0.60.4Ruu (Lagrange)0.60.40.20.200 0.5 1 1.5t(s)00 0.5 1 1.5t(s)Figure 4.20: Corrélation <strong>de</strong> vitesse Lagrangienne dans la turbulence homogène isotropeen décroissance en LES 64 3 . Modèle <strong>de</strong> Cui-Shao. La figure <strong>de</strong> gauche correspond àRe λ = 65 , et celle <strong>de</strong> droite à Re λ = 135 .120

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