Role of wall temperature on cavitation bubble collapse near a wall investigated using thermal lattice Boltzmann method
Role of wall temperature on cavitation bubble collapse near a wall investigated using thermal lattice Boltzmann method
复制标题
使用热晶格玻尔兹曼方法研究壁温对壁附近空化气泡破裂的作用
DOI:
10.1016/j.icheatmasstransfer.2022.105988
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发表时间:
2022-05
影响因子:
7
通讯作者:
Qingbang Han
中科院分区:
文献类型:
--
作者:
Yu Yang;Minglei Shan;Nana Su;Xuefen Kan;Yanqin Shangguan;Qingbang Han
The thermal lattice Boltzmann method can be adopted to simulate cavitation bubble collapse in heating or cooling systems. The numerical results satisfy Laplace's law and are consistent with temperature solutions derived from the Rayleigh–Plesset equation. In this paper, in order to study the effects of wall temperature on a collapsing bubble, a calculation model for a cavitation bubble near the heated/cooled wall is established. The influence mechanism of the micro-jet and the cavitation bubble itself on the solid-wall heat transfer, and the thermodynamic behavior characteristics of the cavitation bubble collapse near the wall are obtained. Adjusting the wall temperatureTwalso affects the thermal effects of cavitation. Furthermore, A dimensionless temperature parameterηis introduced to study the heat transfer intense of the model. The influence ofλ, ΔpandR0on the heat transfer intense are studied and analyzed. The results show that the optimalλ, Δp,R0andTwvalues can be used to enhance heat transfer and realize heating or cooling treatment of different surfaces.
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