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

Abstract

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
Pages1-10
Number of pages10
StatePublished - Jan 1 1996
EventFluid Dynamics Conference, 1996 - New Orleans, United States
Duration: Jun 17 1996Jun 20 1996

Other

OtherFluid Dynamics Conference, 1996
CountryUnited States
CityNew Orleans
Period6/17/966/20/96

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