SIMILAR SOLUTIONS IN NONEQUILIBRIUM NOZZLE FLOWS

Abstract

A method of obtaining similar solutions for pseudo- one-dimensional, non-equilibrium nozzle flows is discussed. A diatomic gas undergoing simultaneous relaxation of both  vibrational and dissociational modes including coupling among them is considered. Similar solutions for oxygen and nitrogen, with nonequilibrium effects starting from the nozzle reservoir are  presented. General correlating parameters have been deduced from the transformed governing equations. It is shown that all the  approximate correlating parameters that have been hitherto formulated using approximate methods can be deduced from the present general correlating parameters as special cases. With the present similar solutions the flow quantities in the nozzle can be readily obtained from the charts for any given initial conditions in the nozzle.