Computation of Non-Equilibrium Chemically Reacting Hypersonic Flow from a Cartesian Mesh with Near Wall Viscous Resolution

Abstract

A hybrid solution methodology has been developed to solve chemically reacting laminar hypersonic flow in chemical Nonequilibrium and thermal equilibrium, by a Carte sian mesh based hybrid solution methodology, which uses an unstructured prism layer solution near the wall and a Cartesian mesh solution away from the wall. The unstructured prism layer for near wall solution is obtained from the normal projection of wall panels of the Cartesian mesh and are stitched with the outer Cartesian mesh. The solver, developed based on this approach when compared with other chemically reacting CFD codes and limited experimental results show good comparison. This procedure has a good potential to handle nearwall resolution for chemic ally reacting flows with a Cartesian mesh for complex geometries as well.