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Thermochemical Relaxation Through Collisions and Radiation

2000; American Institute of Aeronautics and Astronautics; Volume: 14; Issue: 4 Linguagem: Inglês

10.2514/2.6564

1533-6808

S. Kanne, H.-H. Frühauf, Ernst Messerschmid,

Combustion and flame dynamics

A consistent thermochemical relaxation model is presented to calculate high enthalpy flows in a wide velocity and density range. It is based on the coupled vibration-chemistry-vibration model. All types of internal energy, vibrational, rotational, and electronic energy are taken into account. The reaction rate modeling is calibrated using quasi-classical trajectory calculations for dissociation and exchange reactions. The electronic excitation is calculated using quasi-steady-state theory. Radiation is computed using a Monte Carlo method. To couple the flowfield solver and the radiation transport code, the radiative source terms can be implemented into the flowfield solver