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arXiv · 1607.04142

Localization in an acoustic cavitation cloud

Boya Miao·Yu An
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Abstract

Using a nonlinear sound wave equation for a bubbly liquid in conjunction with an equation for bubble pulsation, we predict and experimentally demonstrate the appearance of a gap in the frequency spectrum of a sound wave propagating in a cavitation cloud comprising bubbles. For bubbles with an ambient radius of 100 {\mu}m, the calculations revealed that this gap corresponds to the phenomenon of sound wave localization. For bubbles with an ambient radius of 120 {\mu}m, this spectral gap relates to a forbidden band of the sound wave. In the experiment, we observed the predicted gap in the frequency spectrum in soda water; however, in tap water, no spectral gap was present because the bubbles were much smaller than 100 {\mu}m.

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Boya Miao, Yu An. 2016-07-14. Localization in an acoustic cavitation cloud. https://doi.org/10.1088/0256-307x/34/3/034302

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