Advertisement

Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

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

  • 22 Accesses

  • 1 Citations

Abstract

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.

This is a preview of subscription content, log in to check access.

References

  1. 1.

    E. V. Stupochenko, S. A. Losev, and A. I. Osipov, Relaxation Processes in Shock Waves [in Russian], Nauka, Moscow, 1965.

  2. 2.

    B. V. Kuksenko and S. A. Losev, “Vibrational relaxation in atom-molecule collisions”, Dokl. AN SSSR, vol. 178, no. 6, 1968.

  3. 3.

    M. N. Safaryan and E. V. Stupochenko, “Rotational relaxation of diatomic molecules in a light inert gas”, PMTF, no. 4, 1964.

  4. 4.

    A. I. Osipov and N. A. Generalov, “Onthetheory of vibrational relaxation”, Fizika goreniya i vzryva [Combustion, Explosion, and Shock Waves], no. 2, 1966.

  5. 5.

    P. Hammerling, J. D. Teare, and B. Kivel, “Theory of radiation from luminous shock waves in nitrogen”, Phys. Fluids, vol. 2, no. 4, 1959.

  6. 6.

    S. A. Losev and O. P. Shatalov, “The dissociation rate constants of diatomic molecules at high temperatures”, Khim. vys. energii, no. 4, 1968.

  7. 7.

    E. E. Nikitin, Modern Theories of Thermal Decomposition and Isomerization of Molecules in the Gaseous Phase [in Russian], Nauka, Moscow, 1964.

  8. 8.

    N. A. Generalov and S. A. Losev, “Vibrational excitation and molecular decomposition of oxygen and carbon dioxide behind a shock front”, vol. 6, no. 1, 1966.

  9. 9.

    S. A. Losev and V. A. Polyanskii, “Nonequilibrium ionization of air behind a shock front with a velocity of 5–10 km/sec”, Izv. AN SSSR, MZhG [Fluid Dynamics], vol. 3, no. 1, 1968.

  10. 10.

    S. C. Lin and W. I. Fyfe, “Low-density shock tube for chemical kinetics studies”, Phys. Fluids, vol. 4, no. 2, 1961.

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Cite this article

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). https://doi.org/10.1007/BF01094685

Download citation

Keywords

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