Author(s)

J. Sager & R. Grundmann

Abstract

A major problem for hypersonic reentry vehicles is the prediction of heat flux and shear stress distribution on the vehicles surface. Experiments in this range of speed are complex concerning the time left for measurements and the proper and practical resolution of details of turbulent and transitional flow behaviour. This is why numerical investigations become more and more important. To describe the additional influence of compressibility at super and hypersonic speeds it is necessary to involve certain terms in the set of governing equations like pressure and density fluctuations. In turbulence theory only a minor amount of closure models for these correlations arising from fluctuations of the density, the temperature and the pressure are devel

Keywords