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Departures from the linear equation for vibrational relaxation in shock waves in oxygen and carbon dioxide

Published online by Cambridge University Press:  28 March 2006

H. K. Zienkiewicz  and
N. H. Johannesen
N. H. Johannesen
Affiliation:
Department of the Mechanics of Fluids, University of Manchester
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Abstract

The detailed structure of the relaxation region in shock waves in oxygen was investigated using Blackman's experimental results. Oxygen was found to display a behaviour similar in many ways to that found previously for carbon dioxide with the relaxation frequency, as defined by the simple relaxation equation, depending on the departure from equilibrium as well as on temperature. The previous results for carbon dioxide were further analysed by means of a separate relaxation equation for each mode.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 17 , Issue 4 , December 1963 , pp. 499 - 505
Copyright
© 1963 Cambridge University Press

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References

Blackman, V. H. 1956 Vibrational relaxation in oxygen and nitrogen. J. Fluid Mech. 1, 61.Google Scholar
Blythe, P. A. 1961 Comparison of exact and approximate methods for analysing vibrational relaxation regions. J. Fluid Mech. 10, 33.Google Scholar
Camac, M. 1961 O2 vibration relaxation in oxygen-argon mixtures. J. Chem. Phys. 34, 448.Google Scholar
Johannesen, N. H. 1961 Analysis of vibrational relaxation regions by means of the Rayleigh line method. J. Fluid Mech. 10, 25.Google Scholar
Johannesen, N. H., Zienkiewicz, H. K., Blythe, P. A. & Gerrard, J. H. 1962 Experimental and theoretical analysis of vibrational relaxation regions in carbon dioxide. J. Fluid Mech. 13, 213.Google Scholar
Zienkiewicz, H. K., Johannesen, N. H. & Gerrard, J. H. 1963 Further results on the over-all density ratios of shock waves in carbon dioxide. J. Fluid Mech. 17, 267.Google Scholar