WIT Press


A Comparison Of Turbulence Models For An Impinging Jet In A Crossflow

Price

Free (open access)

Paper DOI

10.2495/CMEM010061

Volume

30

Pages

10

Published

2001

Size

1,072 kb

Author(s)

C. Diaz & J. Tso

Abstract

A comparison of turbulence models for an impinging jet in a crossflow C. Diaz and J. Tso Aerospace Engineering Department, California Polytechnic State University, USA. Abstract A numerical simulation of a previous wind tunnel experiment on an impinging jet in a crossflow was conducted. This study compared the results of the two- equation k-£ turbulence model with those obtained with the one-equation Baldwin-Earth and the zero-equation Baldwin-Lomax turbulence model. From the Cp distribution along the ground level of the symmetry plane, it was shown that among the three turbulence models tested, the flow field of the ground vortex and its location were best simulated by the k-£ turbulence model. Lower C% and QC coefficients in the k-e model yielded best results for the vortex location, but did not accurately capture the ground vortex strength represented by Cpmm The one-equation Baldwin-Earth turbulence model gave a poor prediction of the ground vortex behavior, and

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