| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Uniform Acoustic Cavitation of Liquid in a Disk |
| Yuan-Yuan Zhang, Wei-Zhong Chen**, Ling-Ling Zhang, Xun Wang, Zhan Chen |
Key Laboratory of Modern Acoustics (Ministry of Education), Institute of Acoustics, Nanjing University, Nanjing 210093
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| Cite this article: |
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Yuan-Yuan Zhang, Wei-Zhong Chen, Ling-Ling Zhang et al 2019 Chin. Phys. Lett. 36 034301 |
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Abstract A dynamical propagation model coupled to the oscillation of cavitation bubbles is applied to describe the imploding acoustic field in a cavitating liquid where the acoustic waves transmit from the outside to the inside of a circle disk. Numerical simulation shows that the imploding ability of a ring source can elevate the sound pressure or partly eliminate the decay due to both the bulk attenuation and the attenuation caused by cavitation. However, the imploding ability is limited and there exists a critical radius. When the radius of the disk is larger than the critical one, the imploding ability is not enough to eliminate the attenuation. Fortunately, the cavitation region can be effectively expanded if a hot plate is attached under the center of the disk because the cavitation threshold is related to the temperature of the liquid, which means that a region with good uniformity of cavitation can be enhanced by adjusting the temperature difference between the central and side liquid.
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Received: 27 December 2018
Published: 24 February 2019
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| PACS: |
43.25.+y
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(Nonlinear acoustics)
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43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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47.55.dd
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(Bubble dynamics)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11574150 and 11334005. |
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