Advanced radiation calculations of hypersonic reentry flows using efficient databasing schemes

I. Sohn, A. Bansal, D. A. Levin, M. F. Modest

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Efficient databasing schemes of emission and absorption coefficients are developed to model radiation from nonequilibrium gas flows. for bound-bound transitions, line information including line center wavelength and emission and absorption coefficients without the line shape factor is stored for typical air plasma species. Since the flow is in nonequi- librium, a rate equation approach including both collisional and radiatively induced transitions is used to calculate the electronic state populations. By using the quasi steady state assumption (QSS), the excited state populations of the nonequilibrium gas species are cal- culated in terms of flow temperature species concentrations, excitation cross sections, and radiative life times. The accuracy and efficiency of the databasing scheme are examined by comparing results of the databasing scheme with those of NEQAIR for the stardust flow field.

Original languageEnglish (US)
Title of host publication40th AIAA Thermophysics Conference
StatePublished - 2008
Externally publishedYes
Event40th AIAA Thermophysics Conference - Seattle, WA, United States
Duration: Jun 23 2008Jun 26 2008

Publication series

Name40th AIAA Thermophysics Conference


Other40th AIAA Thermophysics Conference
Country/TerritoryUnited States
CitySeattle, WA

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering
  • Condensed Matter Physics


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