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Orthogonalized Infinite Edge Element Method—Convergence Improvement by Orthogonalization of Hilbert Matrix in Infinite Edge Element Method

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9 Author(s)

This paper proposes an orthogonalization of the Hilbert matrix in element matrices of the infinite edge elements. The validity of the infinite edge element is demonstrated in previous researches, but the Hilbert matrix results in extremely slow convergence in the ICCG method, especially when using higher order expansions. The proposed orthogonalization technique improves the convergence drastically and it makes the infinite elements practical in the electromagnetic FEM analysis of the open boundary problems in quasi-static magnetic fields.

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Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 2 )