Titre :
|
Invariant discretization of the k-Epsilon model in general co-ordinates for prediction of turbulent flow in complicated geometries
|
Auteurs :
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M. Zijlema ;
A. Segal ;
P. Wesseling
|
Type de document :
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article/chapitre/communication
|
Année de publication :
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1995
|
Format :
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p.209-225
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Langues:
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= Anglais
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Catégories :
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THERMIQUE THERMODYNAMIQUE
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Mots-clés:
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ECOULEMENT TURBULENT
;
EQUATION DE NAVIER STOKE
;
MODELE NUMERIQUE
;
SIMULATION
;
PRESSION
;
VITESSE D'ECOULEMENT
;
DISTRIBUTION
|
Résumé :
|
An invariant formulation and finite volume discretization of the standard k-Epsilon turbulence model in general curvilinear coordinates is presented. The k-Epsilon model is implemented together with the incompressible Navier-Stokes equations on staggered grids with contravariant flux components as unknowns. A proof that k and Epsilon are non-negative is given. Positive schemes in the implementation of the k-Epsilon model are evaluated. Discretization of boundary conditions is considered. The numerical method is applied to turbulent flow across a staggered tube bank.
|
Source :
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Computers and fluids, vol 24, n°3
|