A cavitation threshold for transient signals applied to laboratory-scale sparker-induced pulses

The phenomenon known as cavitation can occur when a volume of liquid is subjected to a pressure that falls below a “cavitation threshold”. Following this cavitation inception, a rupturing of the fluid or rapid growth of microbubbles occurs. The cavitation threshold is typically thought to be equal t...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2015-09, Vol.138 (3_Supplement), p.1949-1949
Main Authors: Esplin, J. James, Kim, Benjamin, Culver, R. Lee
Format: Article
Language:English
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Summary:The phenomenon known as cavitation can occur when a volume of liquid is subjected to a pressure that falls below a “cavitation threshold”. Following this cavitation inception, a rupturing of the fluid or rapid growth of microbubbles occurs. The cavitation threshold is typically thought to be equal to the vapor pressure of the fluid; however, laboratory experiments involving underwater high-amplitude sparker-induced pulses have demonstrated that this is not necessarily the case. This presentation introduces a generalized threshold for transient acoustic pulses based on previous work of a threshold for constant-frequency transient signals. The output of this transient cavitation threshold will be compared against simulation and experiment.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4934171