华南理工大学学报(自然科学版) ›› 2005, Vol. 33 ›› Issue (8): 6-10.

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频域电磁计算中的无网格法

尹华杰1 余海涛2   

  1. 1.华南理工大学 电力学院,广东 广州 510640;2.东南大学 电气工程系,江苏 南京 210096
  • 收稿日期:2004-03-29 出版日期:2005-08-25 发布日期:2005-08-25
  • 通信作者: 尹华杰(1966-),男,副教授,博士,主要从事电磁场数值计算以及电机设计与控制的研究 E-mail:epyin@ scut.edu.cn
  • 作者简介:尹华杰(1966-),男,副教授,博士,主要从事电磁场数值计算以及电机设计与控制的研究
  • 基金资助:

    国家自然科学基金资助项目(50107003)

Meshless Method for Electromagnetic Computation in Frequence Domain

Yin Hua-jie1  Yu Hai-tao2   

  1. 1.College of Electric Power,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China;2.Dept.of Electrical Engineering,Southeast Univ.,Nanjing 210096,Jiangsu,China
  • Received:2004-03-29 Online:2005-08-25 Published:2005-08-25
  • Contact: Yin Hua-jie(born in 1966),male,associate professor,Ph.D.,mainly researches on the computation in electromagnetic field and the design&control of electrical machines E-mail:epyin@ scut.edu.cn
  • About author:Yin Hua-jie(born in 1966),male,associate professor,Ph.D.,mainly researches on the computation in electromagnetic field and the design&control of electrical machines
  • Supported by:

    Supported by the National Natural Science Foundation of China(50107003)

摘要: 将一种典型的无网格法——无网格伽辽金法(EFG)用于频域电磁问题的计算.单纯应用加权余量法,推导了频域中多媒介电磁场波动方程的EFG离散格式,并对电磁计算的经典问题,即金属背板上的电介质对入射的TE波的反射问题,进行了数值计算.将所得结果与有限元法(FEM)所得结果进行了比较,发现EFG法具有比有限元法更高的精度.

关键词: 无网格法, 无网格伽辽金法, 频域, 电磁场, 反射系数

Abstract:

This paper adop ts a typ icalmeshlessmethod, that is, the element2free Galerkin ( EFG) method, to solve the electromagnetic p roblems in frequence domain. The EFG discrete form for the multi2medium electro-magnetic wave equation in frequence domain is first deduced by purely using the weighted residual method. Then, aiming at a classic electromagnetic p roblem where the TE p lane wave is reflected by a metal-backed die-lectric slab, numerical computation is carried out. The results obtained by the EFGmethod are finally compared with those obtained by the finite elementmethod ( FEM) , concluding that the former is of greater accuracy.

Key words: meshlessmethod, element-free Galerkinmethod, frequence domain, electromagnetic field, reflection coefficient