International Journal of Numerical Modelling Electronic Networks Devices and Fields · 2004 · 13 citations · 29 references
ComputingComputational EngineeringElectrical EngineeringComputational ElectromagneticsFinite Element AnalysisFinite Element MethodsAnisotropic MediaConvergence AnalysisFinite Element DiscretizationFinite Element FormulationIterative SolversMicrowave Network AnalysisAnisotropic Medium ModelingConvergenceGmresPerfectly Matched LayersPreconditioned Iterative ConvergencePreconditioningPreconditioning TechniquesWaveguide Discontinuities
Abstract The anisotropic media and active properties of the perfectly matched layer (PML) absorbers significantly deteriorate the finite element method (FEM) system condition and as a result, convergence of the iterative solver is substantially slowed down. To address this issue, the symmetric successive over‐relaxation (SSOR) preconditioning scheme is applied to the generalized minimal residual (GMRES) for solving a large sparse and non‐symmetric system of linear equations resulting from the analysis of ferrite waveguide device by use of edge‐based FEM. Consequently, this preconditioned GMRES (PGMRES) approach can reach convergence ten times faster than GMRES for the typical structures. Copyright © 2004 John Wiley & Sons, Ltd.
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