DSMC simulation of vibrational excitation and reaction for molecular nitrogen in shock tube flows

Zheng Li, Tong Zhu, Deborah Levin Fliflet

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

Abstract

This work studies the interaction of the DSMC vibrational relaxation models and reaction models of molecular nitrogen at different Mach num- bers where such processes are important. The V-T transition models as- sessed include the discrete Larson-Borgnakke model and Forced Harmonic Oscillator (FHO). The total collision energy (TCE) and QCT models for the NO formation reaction were considered and the reaction from different N2 vibrational excited states was included in the simulations. It was found the vibrational temperature is higher with the FHO model compared to the LB approach since the FHO model has the higher effective vibrational relaxation rates. Furthermore the use of the QCT rates compared to the usual, TCE model gave a substantially higher NO concentration and smaller shock width.

Original languageEnglish (US)
Title of host publication51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
StatePublished - Aug 19 2013
Externally publishedYes
Event51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 - Grapevine, TX, United States
Duration: Jan 7 2013Jan 10 2013

Publication series

Name51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013

Other

Other51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
CountryUnited States
CityGrapevine, TX
Period1/7/131/10/13

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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    Li, Z., Zhu, T., & Levin Fliflet, D. (2013). DSMC simulation of vibrational excitation and reaction for molecular nitrogen in shock tube flows. In 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 (51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013).