Finite-Element Analysis of Magnetic Field Problem With Open Boundary Using Infinite Edge Element

This paper proposes a novel effective method for open boundary problems by using the finite-element method (FEM) with a new formulation of the infinite edge element. We developed the formulation of the infinite element by adopting the characteristic of conventional edge elements, resulting in a sparse and symmetric matrix. This proposed technique with the infinite edge element has the advantage of drastically reducing the computational burden with keeping the analyses´ accuracy. Some numerical examples which demonstrate the validity of the proposed method are presented.