NUMERICAL-SOLUTIONS TO NOZZLE FLOWS WITH VIBRATIONAL NONEQUILIBRIUM

In many applications of reacting flows including the modeling of gas l asers, there is a great need to couple finite rate kinetics with the g overning conservation equations for the flow. This problem is particul arly acute in the case of multidimensional reacting flows due to the a dditional stringent demands of computational speed, efficiency, and ac curacy. In this article, numerical solutions to quasi-one-dimensional supersonic flows in nozzles with large area variation and state-specif ic vibrational rate kinetics are presented, The present formulation, u nlike previous formulations is more general and the numerical method u sed here extends easily to two and three dimensions. Boundary and init ial conditions are discussed and these extend to multidimensions easil y as well, Results obtained using the present method are compared with those reported in Chiroux de Gavelle de Roany et al. (AIAA Journal, V ol. 31, No, 1, 1993, pp, 119-128), as illustrative examples.