| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Localization in an Acoustic Cavitation Cloud |
| Bo-Ya Miao, Yu An** |
Department of Physics, Tsinghua University, Beijing 100084
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| Cite this article: |
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Bo-Ya Miao, Yu An 2017 Chin. Phys. Lett. 34 034302 |
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Abstract Using a nonlinear sound wave equation for a bubbly liquid in conjunction with an equation for bubble pulsation, we theoretically 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 μm, the calculations reveal that this gap corresponds to the phenomenon of sound wave localization. For bubbles with an ambient radius of 120 μm, this spectral gap is related to a forbidden band of the sound wave. In the experiment, we observe the predicted gap in the frequency spectrum in soda water. However, in tap water, no spectral gap is present because the bubbles are much smaller than 100 μm.
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Received: 07 December 2016
Published: 28 February 2017
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| PACS: |
43.25.Yw
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(Nonlinear acoustics of bubbly liquids)
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43.35.Ei
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(Acoustic cavitation in liquids)
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72.15.Rn
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(Localization effects (Anderson or weak localization))
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73.20.Fz
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(Weak or Anderson localization)
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| Fund: Supported by the National Natural Science Foundation of China under Grant No 11334005, the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant No 20120002110031, and the Tsinghua Fudaoyuan Foreigh Visiting Support Project. |
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