Experimental evaluation of vibration-dissociation coupling models

Joseph Olejniczak, Graham V. Candler, Hans G. Hornung, Chih-yung Wen

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

4 Citations (Scopus)


The coupling between the vibrational relaxation process and dissociation process in nitrogen is studied using a computational fluid dynamics method. The conservation of vibrational energy equation is derived and the form of the source terms is determined for all physically consistent coupling models. The results from three current coupling models are compared to existing experimental results for spherical geometries. It is found that the coupling models of Park, Treanor and Marrone, and Macheret and Rich are able to accurately predict the shock stand-off distances and density contours for these conditions. The differences among the models in the amount of vibrational energy removed with dissociation produces differences in the vibrational temperature profiles, however. Computational results show that wedge geometries are more sensitive to the differences between the models. These results are being used to design new experiments which will be more sensitive to the choice of vibration-dissociation coupling model.
Original languageEnglish
Title of host publicationAIAA/ASME 6th Joint Thermophysics and Heat Transfer Conference, 1994
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Publication statusPublished - 1 Jan 1994
Externally publishedYes
EventAIAA/ASME 6th Joint Thermophysics and Heat Transfer Conference, 1994 - Colorado Springs, United States
Duration: 20 Jun 199423 Jun 1994


ConferenceAIAA/ASME 6th Joint Thermophysics and Heat Transfer Conference, 1994
Country/TerritoryUnited States
CityColorado Springs

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Nuclear and High Energy Physics

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