Title :
Preconditioned generalized minimal residual iterative scheme for perfectly matched layer terminated applications
Author :
Botros, Youssry Y. ; Volakis, John L.
Author_Institution :
Radiation Lab., Michigan Univ., Ann Arbor, MI, USA
fDate :
2/1/1999 12:00:00 AM
Abstract :
The anisotropic 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 affected. To address this issue, we examine the generalized minimal residual (GMRES) solver for solving finite-element systems terminated with PML. A strong approximate inverse preconditioner (AIPC) is coupled with a GMRES solver to speed up convergence and consequently reduce the overall CPU time
Keywords :
electromagnetic wave scattering; finite element analysis; inverse problems; iterative methods; active properties; anisotropic properties; approximate inverse preconditioner; finite-element method; perfectly matched layer terminated applications; preconditioned generalized minimal residual iterative scheme; Absorption; Anisotropic magnetoresistance; Central Processing Unit; Convergence; Finite element methods; Geometry; Iterative methods; Microstrip; Perfectly matched layers; Robustness;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
