Titre :
|
A new kappa-epsilon eddy viscosity model for high Reynolds number turbulent flows
|
Auteurs :
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T. Shih ;
W. Liou ;
A. Shabbir
|
Type de document :
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article/chapitre/communication
|
Année de publication :
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1995
|
Format :
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p.227-238
|
Langues:
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= Anglais
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Catégories :
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SCIENCES FONDAMENTALES ET APPLIQUEES
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Mots-clés:
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MODELISATION
;
ECOULEMENT TURBULENT
;
VISCOSITE
;
DISTRIBUTION
;
VITESSE D'ECOULEMENT
;
ECOULEMENT EN CONDUITE
;
SIMULATION
|
Résumé :
|
A new kappa-epsilon eddy viscosity model, which consists of a new dissipation rate equation and a new realizable eddy viscosity formulation, is proposed in this paper. The new model dissipation rate equation is based on the dynamic equation of the mean-square vorticity fluctuation at large turbulent Reynolds number. The new eddy viscosity formulation is based on the realizability constraints ; the posivity of normal Reynolds stresses and the Schwarz inequality for turbulent shear stresses.
|
Source :
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Computers and fluids, vol 24, n°3
|