Preprint 33/2003

Fast Evaluation of Boundary Integral Operators arising from an Eddy Current Problem

Steffen Börm and Jörg Ostrowski

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Submission date: 09. Apr. 2003
Pages: 23
published in: Journal of computational physics, 193 (2003) 1, p. 67-85 
DOI number (of the published article): 10.1016/
MSC-Numbers: 78A55, 65N38, 68P05
Keywords and phrases: maxwell, bem, hierarchical matrices
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This paper deals with the formula10-matrix approximation of matrices that arise from a Galerkin boundary element (BEM) discretization in the context of the formula12-based eddy current model. The BEM operators are dense, thus need to be compressed. They are of complicated structure, i.e., some kernels and basis functions are vector valued, and test and basis functions are not always identical. The formula10-matrix approximation technique is applied to the kernels of the four different relevant boundary integral operators. Numerical experiments demonstrate the significant acceleration of an iterative solution procedure by means of matrix compression.

20.11.2019, 02:11