ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Dynamic modeling of cavitation bubble clusters: Effects of evaporation, condensation, and bubble—bubble interaction |
Long Xu(许龙)†, Xin-Rui Yao(姚昕锐), and Yang Shen(沈阳) |
College of Science, China Jiliang University, Hangzhou 310018, China |
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Abstract We present a dynamic model of cavitation bubbles in a cluster, in which the effects of evaporation, condensation, and bubble—bubble interactions are taken into consideration. Under different ultrasound conditions, we examine how the dynamics of cavitation bubbles are affected by several factors, such as the locations of the bubbles, the ambient radius, and the number of bubbles. Herein the variations of bubble radius, energy, temperature, pressure, and the quantity of vapor molecules are analyzed. Our findings reveal that bubble—bubble interactions can restrict the expansion of bubbles, reduce the exchange of energy among vapor molecules, and diminish the maximum internal temperature and pressure when bursting. The ambient radius of bubbles can influence the intensities of their oscillations, with clusters comprised of smaller bubbles creating optimal conditions for generating high-temperature and high-pressure regions. Moreover, an increase in the number of bubbles can further inhibit cavitation activities. The frequency, pressure and waveform of the driving wave can also exert a significant influence on cavitation activities, with rectangular waves enhancing and triangular waves weakening the cavitation of bubbles in the cluster. These results provide a theoretical basis for understanding the dynamics of cavitation bubbles in a bubble cluster, and the factors that affect their behaviors.
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Received: 24 October 2023
Revised: 14 December 2023
Accepted manuscript online: 22 December 2023
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PACS:
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47.55.dd
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(Bubble dynamics)
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43.35.+d
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(Ultrasonics, quantum acoustics, and physical effects of sound)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 12074354). |
Corresponding Authors:
Long Xu
E-mail: xulong@cjlu.edu.cn
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Cite this article:
Long Xu(许龙), Xin-Rui Yao(姚昕锐), and Yang Shen(沈阳) Dynamic modeling of cavitation bubble clusters: Effects of evaporation, condensation, and bubble—bubble interaction 2024 Chin. Phys. B 33 044702
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