不同工质中气泡在电场作用下的变形  

Deformation of bubbles in electric field with different working fluid

作　　者：石宝喜[1] 傅玲琼[1] 董伟[1] 伊新[1] 魏冉冉[1] 张云鹏[1] 

机构地区：[1]上海理工大学,能源与动力工程学院,上海200093

出　　处：《上海理工大学学报》2010年第3期209-212,共4页Journal of University of Shanghai For Science and Technology

基　　金：上海市研究生创新基金资助项目(JWCXSL0802);上海市教委科研创新资助项目(08YZ92)

摘　　要：研究在外加电场作用下,不同介电常数的工质对强化沸腾换热的影响,分析了苯、R11、乙醚和乙酸乙酯4种工质在池沸腾换热中,气泡附着于壁面时的电场分布特性及气泡所受的电应力.结果表明:随着工质介电常数的增加,气泡表面场强分布的不均匀性增加,其所受电应力分布愈不均匀,导致气泡形变量加剧,甚至造成破裂.Based on the characteristics of electric field around a bubble and forces on a bubble, the boiling heat transfer enhancement in a uniform electric field using the working fluids benzene, Rll, ethyl ether and ethyl acetate were studied theoretically. The results indicate that the surface strength distribution of bubbles becomes much more uneven as the working fluid dielectric constant increases and it will bring on the variables with respect to bubble shape increased even cause the bubbles rupture.

关 键 词：电水动力学 介电常数 气泡 表面电应力 

分 类 号：TK124[动力工程及工程热物理—工程热物理]