@article {Skidmore:2015:0736-2501:94, title = "Noise generated by ventilated supercavities", journal = "Noise Control Engineering Journal", parent_itemid = "infobike://ince/ncej", publishercode ="ince", year = "2015", volume = "63", number = "1", publication date ="2015-01-01T00:00:00", pages = "94-101", itemtype = "ARTICLE", issn = "0736-2501", url = "https://ince.publisher.ingentaconnect.com/content/ince/ncej/2015/00000063/00000001/art00010", doi = "doi:10.3397/1/376310", keyword = "21.6.8, 21.3.3", author = "Skidmore, Grant M. and Brungart, Timothy A. and Lindau, Jules W. and Moeny, Michael J.", 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.", }