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Preconditioners for the indefinite linear system arising from thehpdiscretization of Maxwell's equations

โœ Scribed by Ledger, P. D.


Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
383 KB
Volume
25
Category
Article
ISSN
1069-8299

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โœฆ Synopsis


Abstract

This paper describes a preconditioner for the iterative solution to the indefinite linear equation system that is obtained when the vector wave equation is discretized by higherโ€order H(curl)โ€conforming finite elements. The preconditioner is based on a decomposition of the H(curl)โ€conforming functions into blocks comprising lowerโ€order functions and higherโ€order functions. Fast convergence is obtained when the grid spacing is sufficiently small. A method for selecting suitable grid spacings is proposed and a series of numerical examples are included to demonstrate the effectiveness of the approach. Copyright ยฉ 2008 John Wiley & Sons, Ltd.


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