Sound propagation through a bubble screen

Sound propagation through a bubble screen

Results of a laboratory experiment to characterize the sound propagation through a bubble screen are described. A bubble screen of various void fractions was positioned in the middle of an anechoic water tank. The cloud was driven using a broadband source and the acoustic pressure was measured on bo...

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Veröffentlicht in:The Journal of the Acoustical Society of America 1993-09, Vol.94 (3_Supplement), p.1890-1890
Hauptverfasser: Hobbs, Christopher M., Kolaini, Ali R.
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container_issue 3_Supplement
container_start_page 1890
container_title The Journal of the Acoustical Society of America
container_volume 94
creator Hobbs, Christopher M.
Kolaini, Ali R.
description Results of a laboratory experiment to characterize the sound propagation through a bubble screen are described. A bubble screen of various void fractions was positioned in the middle of an anechoic water tank. The cloud was driven using a broadband source and the acoustic pressure was measured on both sides of the layer. The results have revealed that there is significant attenuation near the resonance frequency of the bubbles contained within the screen. When the source frequency is near that of one of the ‘‘collective-oscillation’’ frequencies of the screen, sound pressure amplification may occur. In this paper the new findings corresponding to the collective mode amplification, high-frequency attenuation, as a function of the screen’s physical properties are discussed. [Work supported by ONR.]
doi_str_mv 10.1121/1.407511
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title Sound propagation through a bubble screen
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