Application of DSMC electronic excitation modeling to radiation calculation of hypersonic reentry flows

Zheng Li, Ilyoup Sohn, Deborah A. Levin, Michael F. Modest

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

Abstract

The current work implemented excited levels of atomic N and corresponding electron impact excitation/de-excitation and ionization processes in DSMC. Results show that when excitation models are included, the Stardust 68.9 km re-entry flow has an observable change in the ion number densities and electron temperature. Adding in the excited levels of atoms improves the degree of ionization by providing additional intermediate steps to ionization. The extra ionization reactions consume the electron energy and reduce the electron temperature. The DSMC results of number densities of excited levels are lower than the prediction of quasi steady state calculation. Comparison of radiation calculations using electronic excited populations from DSMC and QSS indicates that, at the stagnation point, there is about 20 % difference of the radiative heat flux between DSMC and QSS.

Original languageEnglish (US)
Title of host publication27th International Symposium on Rarefied Gas Dynamics - 2010, RGD27
Pages1118-1123
Number of pages6
EditionPART 1
DOIs
StatePublished - 2011
Externally publishedYes
Event27th International Symposium on Rarefied Gas Dynamics, RGD27 - Pacific Grove, CA, United States
Duration: Jul 10 2011Jul 15 2011

Publication series

NameAIP Conference Proceedings
NumberPART 1
Volume1333
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other27th International Symposium on Rarefied Gas Dynamics, RGD27
CountryUnited States
CityPacific Grove, CA
Period7/10/117/15/11

Keywords

  • Dsmc
  • Kinetic theory
  • Radiation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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