均匀场中两无限长介质圆柱的柱心线电偶极子模型  

A Line Dipole-at-the-Center Model for Two Infinitely Long Dielectric Cylinders in a Uniform Field

作　　者：叶齐政[1] 张家聪[1] 李劲[1] 

机构地区：[1]华中科技大学环境工程系,武汉430074

出　　处：《电工技术学报》2004年第5期1-5,共5页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金重点资助项目(50237010)

摘　　要：针对两无限长的介质圆柱在均匀外电场中的电场计算问题,提出一种考虑了圆柱相互作用的偶极子模型,该偶极子为线电偶极子,且位于圆柱中心。用该方法计算的偶极矩和镜像方法计算的结果作了比较、计算的圆柱表面的电场分布和有限元计算的结果也作了比较,结果表明该方法在柱体表面间距大于0.1倍圆柱半径时是可行的。A line dipole-at-the-center model for two infinitely long dielectric cylinders in a uniform field is proposed. The dipole moments of cylinders and the electric field distributions around the surfaces of cylinder calculated using the line dipole-at-the-center model are compared with those obtained with the image method and the finite-element method. The dipole method is a good approximation when the distance between two cylinders is greater than 0.1R.

关 键 词：柱心偶极子 柱体 偶极矩 

分 类 号：TM15[电气工程—电工理论与新技术]