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Investigate the reactive hypersonic nitrogen flow over a wedge and the effects on thermal and chemical nonequilibrium.

August 1, 2023Physics of FluidsOpen Access

First principles simulation of reacting hypersonic flow over a blunt wedge

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Randomized trial evaluates reactive hypersonic flow modeling, suggesting improved understanding of thermal dynamics.

Investigate the reactive hypersonic nitrogen flow over a wedge and the effects on thermal and chemical nonequilibrium.
Used direct molecular simulation (DMS) for analysis at Mach 21 with isothermal wall conditions.
Enforced full momentum accommodation of particles to incorporate viscous wall effects.
Compared DMS results with Navier-Stokes fluid dynamics solutions using two-temperature models.
DMS revealed non-Boltzmann vibrational energy distributions in the flow field.
The analysis provided a benchmark for assessing lower fidelity two-temperature models.
Highlighted the inadequacy of some existing computational models in predicting thermal and chemical nonequilibrium.

Grover et al. (2023) studied this question.

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