JSME International Journal Series B Fluids and Thermal Engineering
Online ISSN : 1347-5371
Print ISSN : 1340-8054
A Scalable Balancing Domain Decomposition Based Preconditioner for Large Scale Heat Transfer Problems
Abul Mukid Mohammad MUKADDESMasao OGINOHiroshi KANAYAMARyuji SHIOYA
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2006 Volume 49 Issue 2 Pages 533-540


An efficient and scalable Balancing Domain Decomposition (BDD) type preconditioner for large scale linear systems arising from 3-dimensional heat transfer problems is presented. The new method improves parallel scalability of BDD by employing an incomplete balancing technique to approximate a coarse space problem and a diagonal scaling to precondition the local fine space problems instead of the Neumann-Neumann preconditioner. It may increase the number of iterations but reduces the computation costs of the precondition process for each iteration. Consequently, total computation time and required memory are expected to be reduced. The convergence estimates may also be independent of the number of subdomains. We have implemented this algorithm on the parallel processors and have succeeded in solving some ill-conditioned large scale heat transfer problems.

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© 2006 by The Japan Society of Mechanical Engineers
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