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FINITE ELEMENT—ALGEBRAIC CLOSURE MODELLING OF TURBULENT SEPARATED FLOW OVER A BACKWARD‐FACING STEP: STEADY AND UNSTEADY ASPECTS

ZHONG QIN (Department of Civil Engineering, University of British Columbia, Vancouver, B.C., V6T 1W5, Canada)
M.D. OLSON (Department of Civil Engineering, University of British Columbia, Vancouver, B.C., V6T 1W5, Canada)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 1 January 1992

Abstract

A numerical method is developed for steady and unsteady turbulent flows with significant regions of separation. A finite element formulation of the Navier‐Stokes equations with a modified Baldwin‐Lomax eddy viscosity closure is used. The method of averaging is employed to obtain a periodic solution of unsteady flow. The formulation is tested on a problem of flow over a backward‐facing step and the results are compared with experimental and other numerical results. The gross features of both steady and unsteady flows are reasonably well predicted by the numerical analysis, at least for the limited range of parameters tested so far.

Keywords

Citation

QIN, Z. and OLSON, (1992), "FINITE ELEMENT—ALGEBRAIC CLOSURE MODELLING OF TURBULENT SEPARATED FLOW OVER A BACKWARD‐FACING STEP: STEADY AND UNSTEADY ASPECTS", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 2 No. 1, pp. 3-20. https://doi.org/10.1108/eb017476

Publisher

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MCB UP Ltd

Copyright © 1992, MCB UP Limited