On AUSM-Family Scheme for All Speeds with Shock Detection for Carbuncle-Fix

摘要: This paper presents numerical flux functions of compressible CFD methods for all speeds that can be used from very low Mach numbers to high numbers. For the number limit, it is known excessive error degrades both solution and convergence rate. In this study, as basic schemes (SLAU LSHUS), such problems are fixed by controlling dissipation contained in pressure term AUSM-family schemes, without relying on a cutoff number. other hand, there crucial remained unsolved at shock front, carbuncle phenomenon. It shown stability strongly depends formulation mass function schemes. present two low-dissipation with different characteristics combined new scheme. The scheme, named SD-SLAU (Shock Detecting SLAU), switches using detecting way scheme readily applied unstructured grids. provides proper amount into normal tangential directions captured our tests.