Coupled radiation effects in thermochemical nonequilibrium shockcapturing flowfield calculations
Abstract
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 shockcapturing 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.
 Publication:

AIAA, 27th Thermophysics Conference
 Pub Date:
 July 1992
 Bibcode:
 1992thph.confS....H
 Keywords:

 Aerobraking;
 Aerothermochemistry;
 Flow Distribution;
 NavierStokes Equation;
 Nonequilibrium Conditions;
 Radiation Transport;
 Algorithms;
 Iterative Solution;
 Lunar Trajectories;
 Mars (Planet);
 Return To Earth Space Flight;
 Fluid Mechanics and Heat Transfer