THEORY OF RADIATION FROM LOW-VELOCITY SHOCK HEATED AIR

Application of hypersonic computational fluid dynamics models to low v elocity vehicles is examined. Important modeling aspects such as chemi cal kinetics, electronic excitation/de-excitation mechanisms, and exis tence of equilibrium vs nonequilibrium conditions in the flow were exa mined. Flowfield properties and in-band radiances in the wavelength re gion of 0.25 mu in the vicinity of the stagnation streamline are given for a hemisphere with a radius of 0.0762 m. Comparison with recent sh ock tube data is also shown.