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Simulation of 3D Hypersonic Ionized and Radiating Flows in Thermal and Chemical Nonequilibrium

Xueqiang Liu

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Abstract

A numerical method applicable to unstructured mesh is proposed to compute 3D hypersonic ionized and radiating flowfields in thermo-chemical nonequilibrium.The flowfield is described with multi-specy NS equations.The chemical model includes 11 species(O_2,N_2,O,N,NO,NO~+,N~+,O~+,N~+_2,O~+_2,e~-) and 20 reactions.For thermal nonequilibrium effect,a two temperature model is considered.Radiation transfer equation(RTE) is solved with finite volume method.Numerical result on MUSES-C is shown and compared with referenced data.Influence of radiation on flowfield is discussed.

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What this paper is about

A numerical method applicable to unstructured mesh is proposed to compute 3D hypersonic ionized and radiating flowfields in thermo-chemical nonequilibrium.The flowfield is described with multi-specy NS equations.The chemical model includes 11 species(O_2,N_2,O,N,NO,NO~+,N~+,O~+,N~+_2,O~+_2,e~-) and 20 reactions.For thermal nonequilibrium effect,a two temperature model is considered.Radiation transfer equation(RTE) is solved with finite volume method.Numerical result on MUSES-C is shown and compared with referenced data.Influence of radiation on flowfield is discussed.

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Available abstract

A numerical method applicable to unstructured mesh is proposed to compute 3D hypersonic ionized and radiating flowfields in thermo-chemical nonequilibrium.The flowfield is described with multi-specy NS equations.The chemical model includes 11 species(O_2,N_2,O,N,NO,NO~+,N~+,O~+,N~+_2,O~+_2,e~-) and 20 reactions.For thermal nonequilibrium effect,a two temperature model is considered.Radiation transfer equation(RTE) is solved with finite volume method.Numerical result on MUSES-C is shown and compared with referenced data.Influence of radiation on flowfield is discussed.

Key concepts: Hypersonic speed, Non-equilibrium thermodynamics, Ionization, Finite volume method, Thermal radiation, Radiation, Physics, Thermal

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