Investigation of heat exchange on models in subsonic jets of induction plasmatron

The results of studies of flow parameters in an induction plasmatron and heat exchange on air cooled models in subsonic jets of dissociated air in the pressure range of 5.1000-1.0.100000 N/sq m is given. The resultant experimental data completely confirm present theoretical notions about the influence that the catalytic nature of materials has on heat exchange in dissociated air flows. Experimental data on heat flux at low pressures give an idea of the comparative catalytic activity of materials. Numerical values of the level of catalytic activity can be determined by comparing experimental data with the results of numerical analysis of heat exchange when dissociated air flows around a model with consideration of nonequilibrium chemical reactions that occur in the flow and on the surface. A numerical solution is found for the problem of flow of a subsonic jet of viscous heat conducting gas around a model of cylindrical shape with flat ends.