A Method of Mitigating Pulsation in Ventilated Supercavities

Grant M. Skidmore, Timothy A. Brungart, Jules W. Lindau, Michael J. Moeny

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

A method for mitigating ventilated supercavity pulsation is presented. The method, which has its roots in parametric oscillators, shifts the supercavity resonance frequency by modulating its gas ventilation rate. When appropriately modulated, the supercavity is driven off resonance by the waves on the gas/water interface (that remain unchanged) and pulsation is, therefore, suppressed. Initial experimental results indicate that the gas ventilation rate modulation frequency must be sufficiently different from the supercavity resonance frequency to mitigate pulsation. If the modulation frequency is not sufficiently different from the supercavity resonance frequency, pulsation is simply shifted in frequency with a corresponding small reduction in the supercavity interior pressure spectrum level and radiated noise.

Original languageEnglish (US)
Article number012170
JournalJournal of Physics: Conference Series
Volume656
Issue number1
DOIs
StatePublished - Dec 3 2015
Event9th International Symposium on Cavitation, CAV 2015 - Lausanne, Switzerland
Duration: Dec 6 2015Dec 10 2015

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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