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2010-07-22
Solutions of Large-Scale Electromagnetics Problems Using an Iterative Inner-Outer Scheme with Ordinary and Approximate Multilevel Fast Multipole Algorithms
By
Progress In Electromagnetics Research, Vol. 106, 203-223, 2010
Abstract
We present an iterative inner-outer scheme for the efficient solution of large-scale electromagnetics problems involving perfectly-conducting objects formulated with surface integral equations. Problems are solved by employing the multilevel fast multipole algorithm (MLFMA) on parallel computer systems. In order to construct a robust preconditioner, we develop an approximate MLFMA (AMLFMA) by systematically increasing the efficiency of the ordinary MLFMA. Using a flexible outer solver, iterative MLFMA solutions are accelerated via an inner iterative solver, employing AMLFMA and serving as a preconditioner to the outer solver. The resulting implementation is tested on various electromagnetics problems involving both open and closed conductors. We show that the processing time decreases significantly using the proposed method, compared to the solutions obtained with conventional preconditioners in the literature.
Citation
Ozgur Ergul, Tahir Malas, and Levent Gurel, "Solutions of Large-Scale Electromagnetics Problems Using an Iterative Inner-Outer Scheme with Ordinary and Approximate Multilevel Fast Multipole Algorithms," Progress In Electromagnetics Research, Vol. 106, 203-223, 2010.
doi:10.2528/PIER10061711
http://www.jpier.org/PIER/pier.php?paper=10061711
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