| Abstract: | This article discusses relaxation behind shock waves in air at velocities from 8 to 12 km/sec. Profiles are obtained for the parameters of the gas behind the front. The populations of the radiating states of the atoms and the molecules are calculated. In a number of spectral ranges the intensity of the radiation passes through a maximum exceeding the equilibrium level. A comparison is made with experimental data obtained in shock tubes. The radiant heat fluxes from the relaxation zone are calculated. The contribution of this radiation to the radiative heating of blunt bodies with flow around them at hypersonic velocities is evaluated.Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza., No. 4, pp. 161–174, July–August, 1970.The authors thank their co-workers in the High Temperature Institute of the Academy of Sciences of the USSR, above all, L. M. Biberman, V. S. Vorob'ev, A. N. Larar'kov, and G. É. Norman for their valuable evaluations and for their interest in the work. |
