State specific vibrational relaxation and dissociation models for nitrogen in shock wave regions

Zheng Li, Ilyoup Sohn, Deborah A. Levin

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

Abstract

This work studies the interaction of the DSMC vibrational relaxation models and dissociation of molecular nitrogen at moderate Mach numbers where such processes are important. The total collision energy (TCE) and QCT models for the N2 dissociation reaction were considered and the dissociation from different N2 vibrational excited states was included in the simulations. It was found that the use of the QCT rates compared to the usual, TCE model gave a substantially higher degree of dissociation and smaller shock width due to the non-equilibrium distribution in the vibrational states.

Original languageEnglish (US)
Title of host publication28th International Symposium on Rarefied Gas Dynamics 2012
Pages653-660
Number of pages8
Edition1
DOIs
StatePublished - 2012
Externally publishedYes
Event28th International Symposium on Rarefied Gas Dynamics 2012, RGD 2012 - Zaragoza, Spain
Duration: Jul 9 2012Jul 13 2012

Publication series

NameAIP Conference Proceedings
Number1
Volume1501
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other28th International Symposium on Rarefied Gas Dynamics 2012, RGD 2012
Country/TerritorySpain
CityZaragoza
Period7/9/127/13/12

Keywords

  • Chemical Reaction
  • DSMC
  • Kinetic Theory

ASJC Scopus subject areas

  • General Physics and Astronomy

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