Thermodynamic effects of gas adiabatic index on cavitation bubble collapse

被引:4
作者
Yang, Yu [1 ]
Shan, Minglei [2 ]
Kan, Xuefen [3 ]
Duan, Kangjun [4 ]
Han, Qingbang [2 ]
Juan, Yue [1 ]
机构
[1] Nanjing Forestry Univ, Coll Informat Sci & Technol, Nanjing 210037, Peoples R China
[2] Hohai Univ, Jiangsu Key Lab power Transmiss & Distribut Equipm, Changzhou 213022, Peoples R China
[3] Jiangsu Shipping Coll, Dept Transportat Engn, Nantong 226000, Peoples R China
[4] Karlsruhe Inst Technol, Helmholtz Inst Ulm, D-89081 Ulm, Germany
基金
中国国家自然科学基金;
关键词
Multicomponent; Lattice Boltzmann method; cavitation bubble; Gas properties; Adiabatic index; LATTICE BOLTZMANN METHOD; HEAT-TRANSFER; PHASE-CHANGE; MULTIPHASE FLOW; DENSITY RATIO; MODEL; SIMULATION; BOUNDARY; EQUATION;
D O I
10.1016/j.heliyon.2023.e20532
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In this paper, an improved multicomponent lattice Boltzmann model is employed to investigate the impact of the gas properties, specifically the gas adiabatic index, on the thermodynamic effects of cavitation bubble collapse. The study focuses on analyzing the temperature evolution in the flow field and the resulting thermal effects on the surrounding wall. The accuracy of the developed model is verified through comparisons with analytical solutions of the Rayleigh-Plesset equation and the validation of the adiabatic law. Then, a thermodynamic model of cavitation bubble composed of two-mixed gases collapsing near a wall is established to explore the influence of the gas adiabatic index gamma on the temperature behavior. Key findings include the observation that the gamma affects the temperature of the first collapse significantly, while its influence on the second collapse is minimal. Additionally, the presence of low-temperature regions near the bubble surface during collapse impacts both bubble and wall temperatures. The study also demonstrates that the gamma affects maximum and minimum wall temperatures. The results have implications for selecting specific non-condensable gas properties within cavitation bubbles for targeted cooling or heating purposes, including potential applications in electronic component cooling and environmental refrigeration.
引用
收藏
页数:16
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