NUMERICAL-SOLUTIONS TO NOZZLE FLOWS WITH VIBRATIONAL NONEQUILIBRIUM

In many applications of reacting flows including the modeling of gas lasers, there is a great need to couple finite rate kinetics with the governing conservation equations for the flow. This problem is particularly acute in the case of multidimensional reacting flows due to the additional stringent demands of computational speed, efficiency, and accuracy. In this article, numerical solutions to quasi-one-dimensional supersonic flows in nozzles with large area variation and state-specific vibrational rate kinetics are presented, The present formulation, unlike previous formulations is more general and the numerical method used here extends easily to two and three dimensions. Boundary and initial conditions are discussed and these extend to multidimensions easily as well, Results obtained using the present method are compared with those reported in Chiroux de Gavelle de Roany et al. (AIAA Journal, Vol. 31, No, 1, 1993, pp, 119-128), as illustrative examples.