Single Bubble Behavior in Direct Current Electric Field  

作　　者：彭耀 陈凤 宋耀祖 陈民 

机构地区：[1]School of Aerospace, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Journal of Chemical Engineering》2008年第2期178-183,共6页中国化学工程学报（英文版）

基　　金：the National Key Basic Research Program of China (G2000026301);Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, China

摘　　要：The investigation on bubble behavior in electric field helps to analyze the mechanism of electric enhancement of boiling heat transfer. Experiments were performed to investigate the bubble deformation in direct current （DC） electric field with bubbles attached to the orifice. The air bubbles were slowly generated in the transformer oil pool at different orifices, so that the effect of flow on bubble shape was eliminated. The results showed that the bubbles were elongated and the departure volume decreased when the electric field was intensified. The major and minor axes, aspect ratio and departure volume increased with increasing the orifice diameter. Both the electric field and orifice size have great influence on bubble behavior. The bubble deformation was also simulated to compare with the experimental results. The numerical and experimental data qualitatively agree with each other.在电场的水泡行为上的调查帮助分析煮传热的电的改进的机制。实验被执行在有水泡的电场纳入了孔的直流(DC ) 调查水泡变丑。气泡慢慢地在不同的孔在变压器油水池被产生，以便水泡形状上的流动的效果被消除。结果证明水泡被伸长，当电场被加强时，离开体积减少了。主要、次要的轴，纵横比和离开体积与增加孔直径增加了。电场和孔尺寸在水泡行为上有大影响。水泡变丑也被模仿与试验性的结果作比较。数字并且试验数据品质上同意对方。

关 键 词：electrohydrodynamic enhancement multiphase flow bubble behavior direct current electric field 

分 类 号：O6[理学—化学]