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Explicit algebraic stress modelling of homogeneous and inhomogeneous flows
Journal article   Peer reviewed

Explicit algebraic stress modelling of homogeneous and inhomogeneous flows

T.H. Chiu, L.K. Yeh, C.A. Lin and S.J. Chern
International Journal for Numerical Methods in Fluids, Vol.49(8), pp.817-835
20/11/2005

Abstract

Explicit algebraic stress model Homogeneous shear flow Sudden expanding pipe flow Turbulence modelling Turbulent flows
Capability of the explicit algebraic stress models to predict homogeneous and inhomogeneous shear flows are examined. The importance of the explicit solution of the production to dissipation ratio is first highlighted by examining the algebraic stress models performance at purely irrotational strain conditions. Turbulent recirculating flows within sudden expanding pipes are further simulated with explicit algebraic stress model and anisotropic eddy viscosity model. Both models predict better stress-strain interactions, showing reasonable shear layer developments. The anisotropic stress field are also accurately predicted by the models, though the anisotropic eddy viscosity model of Craft et al. returns marginally better results. Copyright © 2005 John Wiley & Sons, Ltd.

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