SOME ASPECTS OF THREE DIMENSIONAL SUPERSONIC/HYPERSONIC INVISCID BLUNT BODY FLOW COMPUTATIONS EMPLOYING HIGH RESOLUTION TVD SCHEMES BASED ON ROE'S RIEMANN SOLVER

摘要

This paper discusses some aspects of three dimensional supersonic and hypersonic inviscid blunt body flow computations. The method is based on the solution of the Euler equations employing an explicit, upwind TVD (MUSCL) formulation of the Roe Riemann Solver within the cell centered finite volume approach. A comparative study of various limiters and entropy fixes is carried out to identify the most appropriate combination. The effect of using cell spacing in the TVD extrapolations is highlighted. Local time stepping and code parallelization has been employed to accelerate convergence in terms of effective wall clock times.