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 language | English (US) |
|---|---|
| Article number | 012170 |
| Journal | Journal of Physics: Conference Series |
| Volume | 656 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 3 2015 |
| Event | 9th International Symposium on Cavitation, CAV 2015 - Lausanne, Switzerland Duration: Dec 6 2015 → Dec 10 2015 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
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A Method of Mitigating Pulsation in Ventilated Supercavities. / Skidmore, Grant M.; Brungart, Timothy A.; Lindau, Jules Washington V.; Moeny, Michael J.
In: Journal of Physics: Conference Series, Vol. 656, No. 1, 012170, 03.12.2015.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - A Method of Mitigating Pulsation in Ventilated Supercavities
AU - Skidmore, Grant M.
AU - Brungart, Timothy A.
AU - Lindau, Jules Washington V.
AU - Moeny, Michael J.
PY - 2015/12/3
Y1 - 2015/12/3
N2 - 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.
AB - 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.
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U2 - 10.1088/1742-6596/656/1/012170
DO - 10.1088/1742-6596/656/1/012170
M3 - Conference article
VL - 656
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012170
ER -