Open Access

ABSTRACT

On the efficiency of generic BE substructuring algorithms based on Krylov solvers

F.C. Araújo¹, L.J. Gray²

1 Department of Civil Engineering, UFOP, 35400-000 Ouro Preto-MG, Brazil; at ORNL under ORISE/HERE Faculty Program.
2 Computer Science and Mathematics Division, ORNL, Oak Ridge, P.O. Box 2008, USA.

The International Conference on Computational & Experimental Engineering and Sciences 2007, 2(2), 41-46. https://doi.org/10.3970/icces.2007.002.041

Abstract

This paper is concerned with the solution of boundary-element models based on substructuring. Structured matrix-vector products and the matrix-copy option are proposed to increase the efficiency of algorithms based on Krylov solvers. The former technique was designed to avoid the excessive number of conditional tests during solver iterations, and the latter one, to avoid the repeated calculation of coefficient matrices for identical subregions. Potential applications of the algorithm to composite materials, and to develop parallel codes, are noted.

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