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The growth and collapse of cavitation bubbles near composite surfaces

Published online by Cambridge University Press:  26 April 2006

A. Shima ,
Y. Tomita ,
D. C. Gibson  and
J. R. Blake
A. Shima
Affiliation:
Institute of High Speed Mechanics, Tohoku University, Sendai, Japan
Y. Tomita
Affiliation:
Institute of High Speed Mechanics, Tohoku University, Sendai, Japan
D. C. Gibson
Affiliation:
CSIRO Division of Construction Engineering, Highett, Victoria, 3190 Australia
J. R. Blake
Affiliation:
Department of Mathematics, The University of Wollongong, Wollongong, New South Wales, 2500 Australia
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Abstract

An experimental study has been made of the growth and collapse of a bubble near a composite surface consisting of two viscoelastic materials. The migratory characteristics of the bubble are examined by means of streak photography. The bubble migration depends not only on the properties of the composite surface but also on bubble size and distance from the surface. Both the surface stiffness and surface inertia are considered to be effective parameters contributing to the bubble migration: the former seeming to be a particularly important factor. The state of neutral bubble collapse, with no migration towards or away from a surface, can be made to occur with an appropriate combination of the surface stiffness and inertia.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 203 , June 1989 , pp. 199 - 214
Copyright
© 1989 Cambridge University Press

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