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Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. An automatic multilevel solver switching strategy for PEECbased EMC simulation
 Institute of Electrical and Electronics Engineers IEEE: 18th International Zurich Symposium on Electromagnetic Compatibility, EMC 2007 : Munich, Germany, 2428 Sept. 2007 Piscataway, NJ: IEEE Service Center, 2007 ISBN: 9783952328606 pp.2528 
 International Symposium on Electromagnetic Compatibility (EMC) <18, 2007, München> 

 English 
 Conference Paper 
 Fraunhofer SCAI () 
 PEEC; electromagnetic compatibility; EMC; linear solver; algebraic multigrid 
Abstract
In this paper, we propose a new, efficient and robust automatic solver switching strategy, called aSAMG, tailored to linear systems of equations arising in PEECbased EMC simulation. The PEEC method (partial element equivalent circuit) is an approach for transforming conducting objects into linear networks with basic electrical elements. Such equivalent circuit models can be simulated by conventional circuit solvers such as SPICE (simulation program for integrated circuit emphasis) based on the MNA (modified nodal analysis) approach. By applying appropriate sparsification techniques, sparse PEEC matrices can be obtained, adequate for iterative solvers. By using multilevel approaches, linear complexity w.r.t. time and memory consumptions can be achieved in the best case. Due to the fact that properties of PEEC matrices can differ drastically, we developed the automatic solver switching strategy aSAMG. Its efficiency for PEEC matrices is demonstrated for seven practically relevant benchmark cases by comparison against standard solvers. In particular, it is shown that aSAMG provides a robust and fast solution strategy.