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- W1988557389 abstract "Flow supercavitation begins when fluid is accelerated over a sharp edge, usually at the nose of an underwater vehicle, where a phase change occurs and causes a low density gaseous cavity to gradually envelop the whole object (supercavity) thereby allowing for higher speeds of underwater vehicles. The supercavity may be maintained through ventilated cavitation caused by injection of gases into the cavity which causes hydrodynamic noise due to fluctuating vapor-water interface. Research thus far have focused on the computation of acoustic pressure for stationary surfaces; or acoustic pressure radiated from moving surfaces mainly in the framework of time domain and 3D problems which require considerable computational resources as opposed to frequency domain and 2D based approaches. This paper presents the acoustic pressure distribution in a supercavitating vehicle moving at subsonic speed based on an axisymmetric boundary element formulation. In effect, this renders the sound sources (due to the impingement of ventilating gas jets on the supercavity wall) to be in motion and demands for a re-formulation of the conventional boundary integral to include the 'Mach' term. Further, the method incorporates Burton & Miller scheme to tackle spurious frequencies inherent in exterior problems." @default.
- W1988557389 created "2016-06-24" @default.
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- W1988557389 date "2013-01-01" @default.
- W1988557389 modified "2023-09-23" @default.
- W1988557389 title "On the prediction of self-noise due to supercavitating underwater vehicle moving at subsonic speed using boundary element approach" @default.
- W1988557389 doi "https://doi.org/10.1121/1.4790328" @default.
- W1988557389 hasPublicationYear "2013" @default.
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