Multigrid Algorithm for Computing Hypersonic, Chemically Reacting Flows

摘要

A robust and efficient multigrid method for computing inviscid and viscous high-speed steady-steady-state reactive flows is presented. Curve-fitted data are used to calculate equilibrium properties. Nonequilibrium flows are calculated using five-species and two-temperature air models. The advection upstream splitting method by pressure-based weight functions is used to acquire robustness and spatial accuracy in capturing a shock and resolving a boundary layer. The five-stage Runge-Kutta and lower-upper symmetric Gauss-Seidel schemes are adopted for efficient time integration.