Detailed simulation of nitrogen dissociation in stagnation regions

Graham V Candler, Joseph Olejniczak, Brent Harrold

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

1 Scopus citations


Vibrational relaxation rates from Schwartz-Slawsky- Herzfeld theory and the forced-harmonic oscillator model are used to study the flow of nitrogen in the stagnation region of a blunt body. The mass conservation equations are coupled to the momentum and total energy equations, and solved using an implicit finite-volume computational fluid dynamics method. The effects of single- and multiple-quantum vibration translation transitions and vibration-vibration transitions are studied. Also, the effect of the mass diffusion of the evicted oscillators across the shock layer is investigated. It is found that highly non-Boltzmann vibrational distributions are present in the flow field. Also, the forced-harmonic oscillator model predicts dissociation from the low vibrational levels only.

Original languageEnglish (US)
Title of host publicationFluid Dynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Number of pages10
StatePublished - Jan 1 1996
EventFluid Dynamics Conference, 1996 - New Orleans, United States
Duration: Jun 17 1996Jun 20 1996


OtherFluid Dynamics Conference, 1996
Country/TerritoryUnited States
CityNew Orleans


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