期刊
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
卷 33, 期 5, 页码 689-694出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.enganabound.2008.09.009
关键词
Poisson equation; Boundary element method; Multidomain method; Mixed boundary element
This paper deals with the efficient 3D multidomain boundary element method (BEM) for solving a Poisson equation. The integral boundary equation is discretized using linear mixed boundary elements. Sparse system matrices similar to the finite element method are obtained, using a multidomain approach, also known as the 'subdomain technique'. Interface boundary conditions between subdomains lead to ail overdetermined system matrix, which is solved using a fist iterative linear least square solver. The accuracy, efficiency and robustness of the developed numerical algorithm are presented using cube and sphere geometry, where the comparison with the competitive BEM is performed. The efficiency is demonstrated using a mesh with over 200,000 hexahedral volume elements on a personal computer with 1 GB memory. (C) 2008 Elsevier Ltd. All rights reserved.
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