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Coupled Radiation Effects in Thermochemical Nonequilibrium Shock-Capturing Flowfield Calculations

机译：热化学非平衡冲击捕获流场计算中的耦合辐射效应

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Lunar and Mars return conditions are examined using the LAURA flowfield code and the LORAN radiation code to assess the effect of radiative coupling on axisymmetric thermochemical nonequilibrium flows. Coupling of the two codes is achieved iteratively. Special treatment required to couple radiation in a shock-capturing method is discussed. Results indicate that while coupling effects are generally the same as occur in equilibrium flows, under certain conditions radiation can modify the chemical kinetics of a nonequilibrium flow and thus alter relaxation processes. Coupling effects are found to be small for all cases considered, except for a five meter diameter aerobrake returning from Mars at 13.6 km/sec. The objective of the present work is to examine radiative coupling effects in shock-capturing, thermochemical nonequilibrium flowfield calculations. A number of freestream conditions, representative of Lunar and Mars return proposals, are studied.

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