Maxime Lalande, Chay W. C. Atkins, Ralf Deiterding

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-415

Numerical simulations of hypersonic viscous flow in thermochemical non-equilibrium over a double
wedge with high Mach and high enthalpy inflow conditions are performed to investigate shock pat-
tern transition. First, simulations for varying second wedge angle are conducted in order to classify the
shock patterns. Then, the effects of the thermochemistry on shock pattern transition are investigated
by comparing simulations with air, nitrogen and an ideal gas flow. The highlighted effects of the second
wedge angle, time and thermochemistry modelling on pattern transition are supported by a shock polar
analysis. Finally, quantitative transition criteria are provided to summarise the influence of these three
parameters.

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In Categories: HiSST 2022
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