Modeling of dissociation-recombination in nozzles using strongly non-equilibrium vibrational distributions

The paper presents a quasi-stationary model for dissociation, recombination and vibrational kinetics in a nozzle expansion of (N-2, N) mixture. The mo del is based on strongly non-equilibrium non-Boltzmann and non-Treanor vibr ational distributions. The closed set of equations for gas dynamic paramete rs is derived, the flow field parameters and vibrational distributions are computed in different sections of the nozzle for various reservoir conditio ns. The influence of vibrational distributions on gas parameters in the noz zle is discussed as well as the dissociation-recombination effects. (C) 200 1 Elsevier Science B,V, All rights reserved.