Fast multigrid solver for high frequency electromagnetic analysis

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David Dibben, The Japan Research Institute,Limited.


This paper describes a fast multigrid solver that has been developed for the next version of JMAG’s high frequency FEM solver. The use of a multigrid solver allows solution times of order O(N), where N is the number of unknowns. When coupled to adaptive mesh refinement this provides a very powerful solution technique. The paper gives a brief introduction to multigrid and then gives some solution times using the solver for several models.
Keywords: Multigrid, Finite Element Method, Edge Element, High Frequency, Maxwell Equation

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