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Fission of Collapsing Cavitation Bubbles

Brennen, Christopher E. (2002) Fission of Collapsing Cavitation Bubbles. Journal of Fluid Mechanics, 472 . pp. 153-166. ISSN 0022-1120. doi:10.1017/S0022112002002288.

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High-speed observations clearly show that though a collapsing cavitation bubble approached its minimum size as a coherent single volume, it usually reappears in the first rebounding frame as a cloud of much smaller bubbles or as a highly distorted single volume. This paper explores two mechanisms that may be responsible for that bubble fission process, one invoking a Rayleigh-Taylor stability analysis and the other using the so-called microjet mechanism. Both approaches are shown to lead to qualitatively similar values for the number of fission fragments and the paper investigates the flow parameters that effect that number. Finally, the additional damping of the Rayleigh-Plesset single-bubble calculation caused by the fission process is investigated; it is shown that the fission damping dominates other contributions normally considered and is consistent with the number of collapses and rebounds that are observed to occur in experiments.

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Additional Information:(Received 27 March 2001 and in revised form 19 June 2002) This paper is dedicated to the memory of my colleague Brad Sturtevant whose enthusiasm and dedication inspired all who knew him. I would also like to thank Joe Shepherd, David Frost, Tim Colonius and Steve Hostler for their contributions to this paper. "Reprinted with the permission of Cambridge University Press."
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72
Deposited By: Christopher Brennen
Deposited On:01 Sep 2004
Last Modified:08 Nov 2021 19:00

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