Modelling of stationary three-dimensional separated air flows around an Ahmed reference model

Free access article

Issue		ESAIM: PROC Volume 7, 1999 Third International Workshop on Vortex Flows and Related Numerical Methods


Page(s)		173 - 182
DOI		10.1051/proc:1999016

ESAIM: Proc., 1999, Vol. 7, pp. 173-182
DOI: 10.1051/proc:1999016

Modelling of stationary three-dimensional separated air flows around an Ahmed reference model

P. Gilliéron¹ and F. Chometon²

¹ Renault S.A.; 1 Avenue du Golf, 78288 Guyancourt Cedex
² Conservatoire National des Arts et Métiers, 15, rue Marat, 78210 Saint Cyr l'Ecole

Abstract
When analysing the topology of turbulent flow systems for alternative vehicle configurations, conventional wind-tunnel tests may not be sufficient. Vehicle development teams investigating this kind of physical phenomenon are increasingly interested in numerical simulation, but reliable implementation of computational techniques in automotive aerodynamics requires validation to confirm that such methods are capable of accurately reproducing experimentally proven physical behaviour. We address this issue by comparing the results of experimental wind-tunnel tests with simulated values for aerodynamic drag coefficient and vortex wake flows at different angles of car rear window inclination, using an Ahmed (AHMED S.R.) reference model.

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