3D eddy current analysis by the hybrid Fe-Be method using magnetic field intensity H

The purpose of this paper is to provide a useful method for numerical calculation of the 3D eddy current problem with open boundary. The finite element method (FEM) and the boundary element method (BEM), which have entirely different features from each other, are useful for numerical analysis. In this paper we describe the hybrid finite element and boundary element method, and adopt the magnetic field intensity H as much as possible as the physical quantity. The conductive region is analyzed by the FEM, on the other hand, the free space having a supply current in it by the BEM. We also propose a new boundary element discretization scheme in H formulation, which makes it entirely easy to couple the BE region with the FE region by introducing the edge element. Some numerical results obtained by the proposed method are compared with measured ones.