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Shock attenuation by a single transverse slit

Published online by Cambridge University Press:  11 April 2006

J. H. S. Lee ,
P. P. Ostrowski  and
J. H. T. Wu
J. H. S. Lee
Affiliation:
Department of Mechanical Engineering, McGill University, Montreal, Canada
P. P. Ostrowski
Affiliation:
Department of Mechanical Engineering, McGill University, Montreal, Canada Present address: Department of Mechanical Engineering, University of Maryland, College Park, Md.
J. H. T. Wu
Affiliation:
Department of Mechanical Engineering, McGill University, Montreal, Canada
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Abstract

Attenuation of a plane shock due to the interaction with a single slit is examined via spark schlieren photography for shock Mach numbers between 1·17 and 2·44 and slit widths between 0·173 and 3·175 cm. Wave speed measurements by piezoelectric transducers indicate that the attenuation is weak and adequately predicted by Whitham's ray-shock theory. The slit width is observed to produce only a secondary effect on the shock attenuation rate. Stability of the attenuating shock is demonstrated from a wave diagram constructed by the ray-shock technique.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 76 , Issue 4 , 25 August 1976 , pp. 675 - 688
Copyright
© 1976 Cambridge University Press

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References

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