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 excited oscillators across the shock layer is investigated. It is found that highly non-Boltzmann vibrational distributions are present in the flow field, and that the forced-harmonic oscillator model predicts that dissociation occurs from the low vibrational levels only.
Original language | English (US) |
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Pages (from-to) | 2108-2117 |
Number of pages | 10 |
Journal | Physics of Fluids |
Volume | 9 |
Issue number | 7 |
DOIs | |
State | Published - Jul 1997 |
Bibliographical note
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