Evaluation of Reynolds stress turbulence closures in compressible homogeneous shear flow

Abstract

The need to predict supersonic and hypersonic turbulent flows of aerodynamic importance has, in recent years, led to new research initiatives in compressible turbulence modeling. A major stumbling block in the development of improved compressible turbulence models is the lack of detailed experimental data for the compressible turbulence statistics in basic high-speed flows. Experimental limitations currently make it infeasible to obtain detailed measurements of any turbulence statistics beyond the mean velocity and Reynolds shear stress in supersonic turbulent flows. This makes it virtually impossible to pinpoint the origin of deficient model predictions when they arise. In Reynolds averaged calculations of complex supersonic turbulent flows, erroneous predictions for the mean velocity field may arise from modeling errors in the Reynolds stresses that can be traced to a variety of possible deficiencies in the treatment of compressibility effects.KeywordsTurbulent Kinetic EnergyReynolds StressTurbulent Dissipation RateDirect Numerical Simulation ResultCompressible TurbulenceThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.