スカラポテンシャルを未知数とする有限要素•境界要素併用法による三次元電磁界解析

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タイトル別名
  • Potential for 3 D Electromagnetic Field Analysis
  • スカラポテンシャルを未知数とする有限要素・境界要素併用法による3次元電磁界解析
  • スカラ ポテンシャル オ ミチスウ ト スル ユウゲン ヨウソ キョウカイ ヨ

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説明

The phenomena in the electromagnetic field intrinsically spread over the infinite space. The purpose of this paper is to provide a useful method for numerical calculation of the electromagnetic field with open boundary.<br>The finite element method (FEM) and the boundary element method (BEM), which have entirely different features from each other, are useful for numerical analysis. This paper describes the hybrid finite element and boundary element method for the three-dimensional eddy current problems with open boundary. In the hybrid method, we adopt the magnetic field intensity H and the magnetic scalar Potential ψ as the physical quantities.<br>The conductive region is analyzed by the FEM adopting H and ψ, on the other hand, the free space having a supply current in it by a novel BE formlation using ψ. Even in a region with a snpply current, we can define the scalar potential ψ by regarding a closed current as a magnetized shell, which makes it possible to calculate ψ analytically. In this paper we adopt the scalar potential as much as possible in the hybrid method for decreasing the number of unkown variables.<br>Several practical applications of the proposed method to the three-dimensional eddy current problems are presented.

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