Simulating Separated and Reattaching Flows at low and high Mach numbers using AUSM+-up Scheme with Stagnation Point Anomaly Corrected Low-Reynolds Number ????? Model

Abstract

In this paper, attention has been given to the development of a compressible flow solver in Fortran language which could predict the flows reliably well at low to high Mach numbers. Here the “reliable prediction of flows” means that the solver should be able to resolve shocks at high Mach number as well as it should be able to predict flows at low Mach number which are normally simulated by using incompressible flow solver. In this work, AUSM+-up has been used in conjunction with low-Reynolds-number turbulence model. Also, the stagnation point anomaly correction has been used to correct the overprediction of turbulent kinetic energy. The present solver is tested for low and high Mach number using two standards separated and reattaching flow problems: flow over a backward facing step and shock-boundary layer interaction over a flat plate. The time-averaged and instantaneous results are presented. The time-averaged quantities are compared with the results