Analytical models for electron-vibration coupling in nitrogen plasma flows - Archive ouverte HAL
Article Dans Une Revue Journal of Thermophysics and Heat Transfer Année : 2000

Analytical models for electron-vibration coupling in nitrogen plasma flows

Résumé

A model for the electron-vibration energy exchange in nitrogen based on a Landau-Teller-type rate equation is presented. Analytical expressions of relaxation times are derived for cutoff harmonic oscillator and Morse oscillator approximations, assuming that the relaxation proceeds by way of a continuous series of Boltzmann distributions over the vibrational states. Comparisons with the direct numerical integration of the master equation have shown that the use of a two-temperature relaxation time allows accurate modeling of the nitrogen vibrational energy relaxation rate for various conditions encountered in high-enthalpy flows with electron and vibrational temperatures up to 40,000 K.
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Dates et versions

hal-00258678 , version 1 (23-02-2008)

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Anne Bourdon, P. Vervisch. Analytical models for electron-vibration coupling in nitrogen plasma flows. Journal of Thermophysics and Heat Transfer, 2000, 14 (4), pp.489-495. ⟨10.2514/2.6571⟩. ⟨hal-00258678⟩
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