Analysis of high speed non-equilibrium chemically reacting gas flows. Part II. A finite volume/finite element model and numerical studies
In this part, a new hybrid numerical model for solving the two-dimensional axisymmetric Navier-Stokes equations for a multi-species reacting gas out of thermal and chemical equilibrium is constructed. The formulation is based on a mixed finite volume/finite element formulation for unstructured meshes. The convective flux is treated with an approximate Osher-Riemann solver, and the other fluxes are treated using P1 finite elements. New aspects of the extension of the Osher-Riemann solver are presented here. This scheme was used for the benchmark model comparison in Part I, and is applied here to hypersonic (Mach 25) flow past a two-dimensional ellipse and a hemispherically blunted body at sea level. Copyright (C) 2000 John Wiley & Sons, Ltd.
non-equilibrium gas flow hybrid numerical model flux