电磁场边值关系的讨论  

Discussion on the Boundary Relation of Electromagnetic Rield

作　　者：黄凤[1] 

机构地区：[1]安徽建筑工业学院数理系,安徽合肥230601

出　　处：《安庆师范学院学报（自然科学版）》2012年第2期126-128,共3页Journal of Anqing Teachers College(Natural Science Edition)

基　　金：国家自然科学基金项目(11147163);安徽省高等学校省级自然科学研究一般项目(KJ2012B042);安徽建筑工业学院博士启动基金资助

摘　　要：本文对电磁场边值关系进行了系统的分析和讨论。介质分界面上的自由面电荷和面电流分布导致电位移矢量的法向分量和磁场的切向分量不连续;类似的,面束缚电荷、面磁化电流导致了极化强度的法向分量和磁化强度的切向分量不连续,在恒定场情况下,电磁场的边值关系是相互独立的,而在时变场情况下,边值关系不完全独立,只需考虑电磁场的切向分量的边值关系。The boundary relation of electromaganetic field is comprehensively analyzed. The normal component of dielectric dis- placement vector and parallel component of magnetic field are discontinuous across the interface due to the free surface charge and the free surface current. Bound surface charge and bound surface magnetized current give rise to the discontinuous normal compo- nent of intensity of polarization and the parallel component of intensity of magnetization across the interface. The boundray relations are independent with each other in the case of the steady electremegnetic field ; however, they are dependent in the case of the time - dependent electromagnetic field, where only the tangential component of boundary relations needs to be considered.

关 键 词：边值关系 面电荷分布 面电流分布 独立性 

分 类 号：O441.4[理学—电磁学]