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Cavitation Nuclei Population and Event Rates

Liu, Zhenhuan and Brennen, Christopher E. (1998) Cavitation Nuclei Population and Event Rates. Journal of Fluids Engineering, 120 (4). pp. 728-737. ISSN 0098-2202. http://resolver.caltech.edu/CaltechAUTHORS:LIUjfe98

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Abstract

To model the processes of cavitation inception, noise and damage, it is necessary to generate a model of the cavitation event rate which can then be coupled with the consequences of the individual events to produce a complete synthesis of the phenomenon. In this paper we describe recent efforts to connect the observed event rates to the measured distributions of cavitation nuclei in the oncoming stream. Comparison are made between the observed event rates and event rates calculated from measured nuclei distributions using an algorithm which includes the dynamics of the nuclei motion and growth. Various complications are explored including the effect of the boundary layer, the relative motion between the nucleus and the liquid, the observable bubble size effect, and the effect of bubble growth on neighboring nuclei. All of these are seen to have important influences on the event rate, and therefore, on cavitation inception and other macroscopic consequences. We demonstrate that it is possible to predict the correct order of magnitude of the event rate when an attempt is made to model the important flow complications.


Item Type:Article
Additional Information:Contributed by the Fluids Engineering Division for publication in the Journal of Fluids Engineering. Manuscript received by the Fluids Engineering Division August 8, 1995; revised manuscript received October 2, 1997. Acknowledgments The authors would like to thank Dr. Yan Kuhn de Chizelle, Dr. Kotaro Sato, Pavel Svitek, Fabrizio D'Auria, Garrett Reisman, Yi-chun Wang, and Elizabeth McKenney for help with the experiments, and Professor Allan Acosta for his advice. This work was supported by the Office of Naval Research under contract number N-00014-91-K-1295.
Record Number:CaltechAUTHORS:LIUjfe98
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:LIUjfe98
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:127
Collection:CaltechAUTHORS
Deposited By: Christopher Brennen
Deposited On:13 Oct 2004
Last Modified:26 Dec 2012 08:39

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