HIGH NONEQUILIBRIUM BOUDARY LAYER FLOWS OF A MULTICOMPONENT DISSOCIATED GAS MIXTURE

摘要

Analytical solutions are presented for family of highly nonequilibrium (nearly frozen) boundary layer flows of a four-component dissociated gas mixture around nonablating bodies with either a completely catalytic or perfectly non-catalytic surface. Both self-similar and locally non-similar flows are included. A detailed study of these solutions is given for a wide range of parametric conditions pertaining to either re-combination rate controlled or dissociation rate controlled situations. The nonequilibrium boundary layer behavior, including the sensitivity to the chemical kinetic data and transport property parameters, is considered in detail for specific applications involving highly cooled stagnation point flows on blunt bodies and hypersonic flows over sharp flat plates and slender cones. The accuracy of the local similarity approximation and use of nonequilibrium binary scaling laws are also examined for the plate and cone flows.