DIRECT SIMULATION OF SHOCK FRONT RADIATION IN AIR

An absorption model has been incorporated in a simulation of shock fro nt radiation in air at a shock velocity of 10.2 km/s and a pressure of 0.1 torr. The conditions selected correspond to two shock tube experi ments carried out at AVCO and NASA Ames Research Center, Comparisons a re made with experiment, with another absorption model, and with recen t continuum calculations, In general, calculated intensities are withi n a factor of 2-4 of measured values, Moreover, allowing for absorptio n brought prediction of the intensity of N-2(+)(1-) well within experi mental error.