静磁場領域分割解析のインターフェイス問題の前処理 マルチパート化に向けて

金山 寛; 荻野 正雄; 杉本 振一郎

doi:10.1299/jsmecmd.2017.30.097

セッションID: 097

DOI https://doi.org/10.1299/jsmecmd.2017.30.097

会議情報

主催: 一般社団法人日本機械学会

会議名: 第30回計算力学講演会

開催日: 2017/09/16 - 2017/09/18

静磁場領域分割解析のインターフェイス問題の前処理

マルチパート化に向けて

*金山寛, *荻野正雄, *杉本振一郎

著者情報

キーワード: Large Scale Magnetostatic Problems, Parallel Computing, Domain Decomposition Method, Balancing Domain Decomposition Preconditioner, Without Explicit Construction of Schur Complement Matrix

会議録・要旨集フリー

詳細

抄録

An iterative domain decomposition method is proposed for numerical analysis of 3-Dimensional (3D) linear magnetostatic problems taking the magnetic vector potential as an unknown function. The iterative domain decomposition method is combined with the Preconditioned Conjugate Gradient (PCG) procedure and the Hierarchical Domain Decomposition Method (HDDM). Our previously employed preconditioner was the Neumann-Neumann preconditioner. Numerical results showed that the method was only effective for smaller problems. In this paper, we consider its improvement with a variant of balancing domain decomposition preconditioner (BDD-DIAG). Specially, we consider the dealing without explicit construction of Schur complement matrix towards multi-part processing.

責任著者(Corresponding author)

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