Numerical simulation of the transient aerodynamic phenomena induced by passing manoeuvresReport as inadecuate




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1 Chalmers University of Technology Gothenburg

Abstract : Several three-dimensional Unsteady Reynolds-Averaged Navier-Stokes URANS simulations of the passing generic vehicles Ahmed bodies are presented. The relative motion of vehicles was obtained using a combination of deforming and sliding computational grids. The vehicle studied is an Ahmed body with an an-gle of the rear end slanted surface of 30 • . Several different relative velocities and transversal distances between vehicles were studied. The aerodynamic influence of the passage on the overtaken vehicle was studied. The results of the simulations were found to agree well with the existing experimental data. Numerical results were used to explain effects of the overtaking manoeuvre on the main aerody-namic coefficients.

Keywords : Unsteady Reynolds-Averaged Navier-Stokes Turbulence Model Deforming mesh Sliding mesh Unsteady aerodynamics Overtaking vehicles Passing manoeuvres





Author: David Uystepruyst - Siniša Krajnovic -

Source: https://hal.archives-ouvertes.fr/



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