Abstract
The results of a numerical study of the thermal and acoustic energies released during the collapse of a single spherical cavitation bubble in water at a pressure of 10 bar and a temperature of 20°С are given. In the model used, we take into account the thermal conductivity of the vapor in the bubble and the surrounding liquid, heat transfer, evaporation/condensation on the surface of the bubble, and the fluid compressibility. The conversion of mechanical energy into heat due to the fluid viscosity is not accounted for. When the bubble collapses, the energy of acoustic radiation due to radial pulsations of the bubble is shown to be approximately nine times greater than the energy spent on heating the liquid. The value of this energy is proportional to the cube of the initial bubble radius.
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Translated by G. Dedkov
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Aganin, A.A., Ganiev, O.R., Davletshin, A.I. et al. Evaluation of Thermal and Acoustic Energy during Collapse of Cavitation Bubbles. J. Mach. Manuf. Reliab. 49, 367–373 (2020). https://doi.org/10.3103/S1052618820050027
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DOI: https://doi.org/10.3103/S1052618820050027