High fidelity modeling of thermal relaxation and dissociation of oxygen
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© 2016, American Institute of Aeronautics and Astronautics Inc, AIAA, All rights reserved. The rovibrational relaxation of oxygen in a heat bath of parent atoms is studied by means of master equations. It is found that vibrational and rotational relaxation times exhibit a pattern inherent in a chemically reactive collisional pair. An intrinsic feature of the O 3 molecular system with a large attractive potential is a weak temperature dependence of the rovibrational transition rates. For this reason, the quasi-steady vibrational and rotational temperatures experience a maximum at increasing translational temperature. The average loss of internal energy due to dissociation quickly diminishes at high temperatures, compared to other molecular systems. The present quasi-steady dissociation rate coefficients are utilized to validate the accuracy of the multi-temperature model.
author list (cited authors)
Andrienko, D. A., & Boyd, I. D.