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Shock Wave Measurements in Cloud Cavitation

Reisman, G. E. and Brennen, C. E. (1997) Shock Wave Measurements in Cloud Cavitation. In: 21st International Symposium on Shock Waves, 20-25 July 1997, Great Keppel Island, Australia.

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One of the most destructive (and noisy) forms of cavitation is that referred to as "cloud cavitation" because it involves a large collection of bubbles which behave as a coherent whole. The present paper presents the results of an experimental study of the processes of collapse of a cavitation bubble cloud, specifically that generated by an oscillating hydrofoil in a water tunnel. Measurements of the far-field noise show that this is comprised of substantial pulses radiated from the cloud at the moment of collapse. Also, transducers within the cavitation zone encounter very large pressure pulses (or shock waves) with amplitudes of the order of tens of atmospheres and typical durations of the order of tenths of a millisecond. These shock waves appear to be responsible for the enhanced noise and damage potential which results from that phenomenon.

Item Type:Conference or Workshop Item (Paper)
Additional Information:The authors are very grateful for the support for this research provided by the Office of Naval Research under Contract N00014-91-J-1295.
Subject Keywords:Cloud cavitation, Shock Waves, Hydrofoil, Pressure Transducers, High-speed motion pictures
Record Number:CaltechAUTHORS:REIissw97
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:143
Deposited By: Christopher Brennen
Deposited On:06 Jan 2005
Last Modified:02 Oct 2019 22:29

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