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Band Models for Radiative Transfer in Non-LTE Diatomic Molecules of CO2-N2 Plasmas

[+] Author Affiliations
Sébastien Depraz, Philippe Rivière, Marie-Yvonne Perrin, Anouar Soufiani

École Centrale Paris, Châtenay-Malabry, France

Paper No. IHTC14-22301, pp. 831-836; 6 pages
doi:10.1115/IHTC14-22301
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 5
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4940-8 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

A statistical narrow-band model is developed for the optically non-thin electronic systems of carbonaceous molecules in CO2 -N2 plasmas and its accuracy is studied under equilibrium and non-equilibrium conditions. Line by line calculations are used to produce curves of growth of transmissivities from which band model parameters are calculated by least-square adjustments. The model is shown to provide quite accurate description of radiative properties and radiative intensities for Doppler, Lorentz, and Voigt line profiles, and for both local thermodynamic equilibrium and a multi-temperature description of the gas mixture thermodynamic state. The model is also suitable for a more general description of the gas thermodynamic state where the electronic state populations are arbitrary.

Copyright © 2010 by ASME

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