Abstract

Based on the study of hypersonic thermochemical nonequilibrium flow around a double-wedge flow, several influencing factors of numerical simulation results were discussed. The 2D finite volume method of unstructured quadrilateral grid solver simulated thermochemical nonequilibrium viscous double-wedge flow in 0 degree and -10 degree attack angle. Leading edge passivation and laminar / turbulent effect were analyzed in plenty grids. Blunt leading edge can raise the leading shock wave and can change the location of triple-point and jet. But it’s influence is very weak in the end of flow. Turbulence results in a higher wall heat than laminar flow and slightly alter the shock of tail flow.These factors may cause the unconsistency between numerical simulation and experiment.

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