Mixed Finite-Element Method for 3-D Closed Cavity Problem With Anisotropic and Lossy Media

被引：1

作者：

Jiang, Wei ^{[1
]}

Wang, Xinfeng ^{[1
]}

Wu, Lei ^{[1
]}

机构：

[1] Guizhou Minzu Univ, Sch Mechatron Engn, Guiyang 550025, Guizhou, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2019年 / 55卷 / 05期

关键词：

Lossy media; mixed finite-element method (MFEM); resonant cavity; spurious mode; MAXWELL EQUATIONS; DISCRETIZATION; RESONATOR;

D O I：

10.1109/TMAG.2019.2899817

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper mainly investigates the 3-D resonant cavity problem with anisotropic and lossy media. When the media are electric lossy and not magnetic lossy, we solve the 3-D cavity model with magnetic field as a working variable by mixed finite-element method (MFEM). A Lagrange multiplier is used to enforce divergence-free condition in a weak sense. In the MFEM, we employ edge basis function of the lowest order to expand the electric field or the magnetic field, and linear element basis function to expand the Lagrange multiplier. Numerical experiments show that the MFEM can eliminate all the spurious modes to solve this type of 3-D closed cavity problem.

引用

页数：6

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