The effect of N+N2 collisions on the non-equilibrium vibrational distributions of nitrogen under reentry conditions

✍ Scribed by I. Armenise; M. Capitelli; R. Celiberto; G. Colonna; C. Gorse; A. Laganà

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 605 KB
• Volume: 227
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)00804-3

✦ Synopsis

Global (reactive + non-reactive) quasiclassical state-specific rate coefficients for the vibrational excitation and deexcitation of nitrogen molecules by collision with nitrogen atoms have been used to model a reacting flow. The one-dimensional model used describes the relaxation of N2 vibrational distributions in the boundary layer surrounding a shuttle reentering the atmosphere. The results single out the strong non-equilibrium character of the vibrational distributions along the coordinate normal to the shuttle surface caused by the dissociation-recombination processes. The results also show the dependence of the vibrational distributions upon inclusion in the model of state-specific N+NI ( u) rates.