Connexion utilisateur 0 Panier
Accueil Livres eBooks Revues spécialisées Références et comptes rendus Auteurs, éditeurs, examinateurs Index A-Z des produits
Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN Imprimer: 1-56700-135-1

APPLICATION OF NON-LINEAR EDDY-VISCOSITY AND DIFFERENTIAL STRESS CLOSURES TO SEPARATED FLOW

Résumé

Non-linear eddy-viscosity models and second-moment closure are examined, both theoretically and by comparison with 2-d and 3-d test cases featuring separation from mildly curved surfaces. It is found that, whereas non-linear stress-strain relations improve the prediction of normal-stress anisotropy, the mean flow dynamics are primarily influenced by the shear stress and, in particular, by the use of a strain-dependent linear coefficient. The advantages of second-moment closure are most apparent in fully 3-d flows, where several stress components are important. Determination of the turbulent length scale remains a crucial element in the performance of models in non-equilibrium flows.
Accueil Portail numérique Begell Bibliothèque numérique Begell Revues spécialisées Livres eBooks Références et comptes rendus Auteurs, éditeurs, examinateurs Index A-Z des produits Prix et politiques d'abonnement A propos de Begell House Contactez-nous Language English 中文 Русский 日本語 Português Deutsch Français Español