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Vibrational relaxation effects in weak shock waves in air and the structure of sonic bangs

Published online by Cambridge University Press:  29 March 2006

J. P. Hodgson
J. P. Hodgson
Affiliation:
Department of the Mechanics of Fluids, University of Manchester
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Abstract

Vibrational relaxation of oxygen and nitrogen is shown to be important in determining the structure of weak shock waves in air. Of particular interest are waves with pressure jumps of 100Pa1 Pa ≡ 1 pascal = 1 N m−2. or less which are present in the atmosphere as sonic bangs. It is found that the structure of the waves depends on shock strength, ambient pressure, temperature and humidity.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 58 , Issue 1 , 20 March 1973 , pp. 187 - 196
Copyright
© 1973 Cambridge University Press

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References

Clarke, J. F. & Rodgers, J. B. 1965 Shock waves in a gas with several relaxing internal energy modes. J. Fluid Mech. 21, 591.Google Scholar
Evans, L. B. 1972 Vibrational relaxation in moist nitrogen. J. Acoust. Soc. Am. 51, 409.Google Scholar
Henderson, M. C. 1962 Vibrational relaxation in nitrogen and other gases. J. Acouust. Soc. Am. 34, 349.Google Scholar
Hodgson, J. P. & Johannesen, N. H. 1971 Real-gas effects in very weak shock waves in the atmosphere and the structure of sonic bangs. J. Fluid Mech. 50, 17.Google Scholar
Monk, R. G. 1969 Thermal relaxation in humid air. J. Acoust. Soc. Am. 46, 580.Google Scholar