Journal of Fluid Mechanics

Interaction of two cavitation bubbles with a rigid boundary

J. R.  Blake a1, P. B.  Robinson a1, A.  Shima a2 and Y.  Tomita a3
a1 School of Mathematics and Statistics, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
a2 Institute of Fluid Science, Tohoku University, Sendai, Japan
a3 Hakodate College, Hakkaido University of Education, Hakodate, Japan

Article author query
blake jr   [Google Scholar] 
robinson pb   [Google Scholar] 
shima a   [Google Scholar] 
tomita y   [Google Scholar] 


The motion of two cavitation bubbles near a rigid boundary is observed experimentally using a high-speed camera and compared against numerical solutions obtained using a boundary integral method. The comparisons are favourable with regard to both bubble shape history and centroid motion. The bubbles show a range of responses depending on the experimental configuration. Elongated bubbles, jets directed towards or away from the rigid boundary and bubble splitting phenomena are all observed and predicted for the given parameters. It is clear that nearby bubbles are equally as important as the presence of a rigid boundary in determining the behaviour of bubbles.

(Published Online April 26 2006)
(Received October 23 1992)
(Revised June 2 1993)