超声空化对溴化锂溶液气泡运动的影响  

Effect of ultrasonic cavitation on bubble movement in lithium bromide solution

作　　者：郝广宇 韩吉田[1] 李良洁 展茂胜 Hao Guangyu;Han Jitian;Li Liangjie;Zhan Maosheng(School of Energyand Power Engineering,Shandong University)

机构地区：[1]山东大学能源与动力工程学院

出　　处：《制冷与空调》2021年第10期30-34,共5页Refrigeration and Air-Conditioning

基　　金：国家自然基金国际(地区)合作与交流项目(41761144067)。

摘　　要：根据溴化锂溶液的物性参数方程,利用试验数据和超声作用于均相液体中空化气泡运动的动力学模型,推导出溴化锂溶液超声空化气泡运动方程。利用MATLAB对溴化锂溶液超声空化气泡的运动特性进行数值模拟,对过冷沸腾和饱和沸腾条件下溴化锂溶液沸腾气泡的运动变化特性进行研究,得到超声空化效应对气泡运动特性变化影响的模拟结果。为溴化锂溶液传热性能和吸收式制冷机组制冷效率的提高提供一定的理论依据。The equation of the ultrasonic cavitation bubble movement in lithium bromide solution is derived based on the physical property parameter equation of lithium bromide solution,the experimental data and the kinetic model of ultrasonic action on cavitation bubble movements in homogeneous liquid.The characteristics of ultrasonic cavitation bubble movement in the lithium bromide solution is simulated using MATLAB.The movement change characteristics of the boiling bubbles of the lithium bromide solution are studied under the subcooled and saturation boiling modes,and the simulation results of the effect of ultrasonic cavitation on the changes of bubble movement characteristics are obtained.The research results could provide a theoretical basis for enhancing the heat transfer performance of lithium bromide solution and the refrigeration efficiency of absorption refrigeration units.

关 键 词：吸收式制冷 超声波 溴化锂 空化 数值模拟 

分 类 号：TB6[一般工业技术—制冷工程]