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Effect of vibrational relaxation of molecules on dissociating air characteristics behind a strong shock front

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Molecular vibrational relaxation has a considerable effect on the dissociation rate in a gas consisting of molecules of a single type [1]. In gas mixtures such as air, vibrational relaxation also affects the other reaction rates, which may be important in solving several problems of hypersonic aerodynamics. This is due to the fact that in air at temperatures above 5000° the vibrational excitation of nitrogen molecules and the dissociation of oxygen molecules proceed almost simultaneously. We study the effect of vibrational relaxation on the conditions behind a strong shock front.

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Losev, S.A., Polyanskii, V.A. Effect of vibrational relaxation of molecules on dissociating air characteristics behind a strong shock front. Fluid Dyn 4, 52–55 (1969).

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  • Oxygen
  • Nitrogen
  • Shock Front
  • Considerable Effect
  • Oxygen Molecule