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Air collisional-radiative modeling with heavy-particle impact excitation processes
Journal article   Peer reviewed

Air collisional-radiative modeling with heavy-particle impact excitation processes

A Lemal, Carolyn Jacobs, M Y Perrin, C O Laux, P Tran and E Raynaud
Journal of Thermophysics and Heat Transfer, Vol.30(1), pp.226-239
2016
DOI: https://doi.org/10.2514/1.T4549
url
https://doi.org/10.2514/1.T4549View
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Abstract

This paper reviews the electron-and heavy-particle impact processes governing the population/depletion of the states of N, O, N2, and N+2, which can be significantly affected by nonequilibriumconditions while strongly radiating in lunar-return shock layers. The collisional-radiative model developed in this work includes electron-impact excitation, ionization, heavy-particle impact excitation, vibration-electron, vibration-translation, dissociation and bound-bound radiative mechanisms. The available experimental and theoretical reaction rates governing these processes were critically reviewed to produce a reliable set of rate constants. The collisional-radiative model was then applied to typical nonequilibrium thermodynamic conditions encountered during lunar-return Earth reentry. The effect of heavy-particle impact processes is discussed.

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Industry collaboration
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Engineering, Mechanical
Thermodynamics
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