
Accession Number : AD0601399
Title : STRUCTURE OF RADIATIONRESISTED SHOCK WAVES WITH VIBRATIONAL NONEQUILIBRIUM.
Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF
Personal Author(s) : Emanuel,George
Report Date : 15 MAY 1964
Pagination or Media Count : 48
Abstract : The continuum equations of gasdynamics are used to study the effect of thermal radiation and vibrational nonequilibrium on the structure of a shock wave. Emphasis is on a description of the gasdynamic phenomena involved rather than on numerical results. For example, a Mollier diagram interpretation, useful for understanding radiationresisted shock waves, is given. The principal results stem from an analysis of the singularpoint structure far upstream and far downstream in the flow. This analysis indicates in a heuristic fashion that a unique solution exists. It also shows that two parameters, a Mach number and the ratio of a radiation length to a relaxation length, primarily govern the qualitative behavior of the flow. Thus, for a specific range of values of these parameters, the vibrational energy overshoots its final equilibrium value. For a different range, a net amount of radiant energy is transferred from the hot gas behind the adiabatic shock to the gas far downstream. (Author)
Descriptors : (*SHOCK WAVES, THERMAL RADIATION), VIBRATION, RELAXATION TIME, THERMODYNAMICS, GAS FLOW, ADIABATIC GAS FLOW, MACH NUMBER, ITERATIONS
Distribution Statement : APPROVED FOR PUBLIC RELEASE