Abstract
The noise generated by ventilated supercavities has been explored experimentally in a water tunnel facility. The most prominent acoustical characteristic is the monopole behavior exhibited by a ventilated supercavity in its pulsating closure regime. The interior cavity pressure and near-field radiated sound are monotonic with a frequency that is related to the speed and length of waves propagating on the supercavity gas/water interface. The cavity interior pressure spectrum level is shown to be related to the near-field and far-field noise spectrum level through spherical spreading of the sound waves from the supercavity interface. As a result, the cavity interior pressure can be used as a measure of the radiated noise. The noise radiated by a pulsating supercavity at the pulsation frequency is at least 40 dB above that radiated by comparable re-entrant jet and twin vortex cavities.
Original language | English (US) |
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Pages (from-to) | 94-101 |
Number of pages | 8 |
Journal | Noise Control Engineering Journal |
Volume | 63 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1 2015 |
All Science Journal Classification (ASJC) codes
- Building and Construction
- Automotive Engineering
- Aerospace Engineering
- Acoustics and Ultrasonics
- Mechanical Engineering
- Public Health, Environmental and Occupational Health
- Industrial and Manufacturing Engineering