Study of Open Boundary Electromagnetic Field Coupling Computation Method
In this paper a method of combining finite elements and boundary elements is proposed to try to solve opened three-dimension eddy field in electromagnetic detection,which subdivide the opened region into closed inner sub-region and opened outer infinite sub-region by defining a suppositional boundary. Then using Finite Elements Method (FEM) and Boundary Elements Method (BEM) in above two sub-region respectively,the A-Φ and A equations restricted by Coulomb criterion are derived. On suppositional boundary,direct coupling method is adopted to combine the FEM equations and BEM equations;therefore the solution of the entire region can be obtained. At last,the threedimension magnetic field in cable eccentricity detection is computed,and magnetic field distribution and eddy loss are given out. The results show that the magnetic field has a reasonable distribution,and also that the linear relation between the computed results and the value of eccentricity has good coherence with that between the experiment results and the value of eccentricity.
FEM BEM suppositional boundary opened electromagnetic field
Baojun Jiang
College of Electromechanical and Automobile Engineering,Chongqing JiaoTong University Chongqing,China
国际会议
2009 International Conference on Information,Electronic and Computer Science(2009 国际信息、电子与计算机工程学术会议)
青岛
英文
490-494
2009-11-21（万方平台首次上网日期，不代表论文的发表时间）