Author(s)

U. Goldberg and 0. Peroomian

Abstract

A cubic &-c and a linear single equation model were applied to a Mach 9 38° cooled ramp flow test case. The former was used with and without compressibility correction, the latter without any such correction. Results indicate that the single equation model performs much better than the cubic k-e model in spite of the fact that the e equation has been treated to handle adverse pressure gradient flows. It is concluded that in order to predict high Mach number flows with confidence, it is best to avoid models involving the c equation. 2 Introduction This paper aims at testing and evaluating the performance of two wall- distance-free turbulence closure models in predicting heat transfer under hypersonic flow conditions: a linear one-equation eddy viscosity model* and a nonlinear (cubic) extension of a

Keywords