摘要
针对均匀电场作用下的气液两相系统建立了数学模型,研究了单个及多个气泡附着于壁面、即将脱离和上升至两极板间的电场分布情况.结果表明,气泡周围电场的强弱及其分布的均匀性是影响气泡运动的重要因素.当大量气泡出现并有部分气泡脱离壁面时,电场对气泡的作用减弱,这为高热流密度下电场强化沸腾换热效果不再明显提供了理论依据.
In order to investigate the effects of the electric field on bubbles,a mathematical model is established to predict the electric field distribution in a gas-liquid two-phase system under the action of a uniform field.The model can account for the presence of a single bubble and multiple bubbles being attached to one plate,departing from the plate, and floating into the space of parallel plates.The results indicate that the electric field intensity and its uniformity around bubbles play an important role in the movement of bubbles.When a number of bubbles generate and some of them depart into the main fluid,the effects of the electric field decrease.The study lays a theoretical foundation for diminishing EHD effects as the boiling heat flux produces greater number of bubbles.
出处
《上海理工大学学报》
CAS
北大核心
2004年第3期197-201,共5页
Journal of University of Shanghai For Science and Technology
基金
国家973重点基础研究发展规划资助项目(G2000026302)
上海市科技发展基金资助项目(02DJ14049)
关键词
电水动力学
数学模型
气泡
electrohydrodynamics
mathematical model
bubbles
