运动薄壳体上电磁场平均边界条件  

Averaged boundary conditions for electromagnetic fields on moving thin conducting shells

作　　者：刘宝林[1] 范小安 赵伟[2] 

机构地区：[1]清华大学计算机与信息管理中心,北京100084 [2]清华大学电机工程与应用电子技术系,北京100084

出　　处：《清华大学学报（自然科学版）》2002年第10期1397-1400,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目 ( 50 1770 16 ) ;清华大学骨干人才支持计划项目

摘　　要：为简化电磁屏蔽边值问题的分析及计算 ,考虑到采用电磁场精确边界条件处理电磁屏蔽问题的复杂性 ,利用局部平面波近似法 ,导出了运动薄导体壳上电磁场的平均边界条件 ,给出了平均边界条件的一般矢量表达式。将 3个区域内的电磁场问题转化为二个区域内的电磁场问题。通过计算机仿真研究了其有效应用范围。计算结果表明 。The analysis of boundary value problems in electromagnetic shielding was simplified using an averaged boundary condition on a moving thin conducting shell based on a locally plane wave approximation. General vector expressions are given for the averaged boundary condition. The electromagnetic field problems within three zones were changed into the ones within two zones. Computer simulations were used to investigate application limit. The result shows that the precise boundary condition for the electromagnetic field can be replaced by the averaged boundary condition.

关 键 词：电磁场 运动薄导体壳 平均边界条件 电磁屏蔽 局部平面波近似法 数学模型 边值问题 

分 类 号：O441.4[理学—电磁学]