Wavelet BEMのためのマルチグリッド反復法

  • 阿部 和久
    新潟大学助工学部建設学科
  • 林 志保
    新潟大学大学院自然科学研究科環境システム科学専攻
  • 紅露 一寛
    新潟大学大学院自然科学研究科環境管理科学専攻

書誌事項

タイトル別名
  • Multigrid Methods for Wavelet BEM
  • Wavelet BEM ノ タメ ノ マルチグリッド ハンプクホウ

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抄録

Multigrid algorithm is developed for wavelet BEM. Since the wavelet bases have hierarchical structure, in the wavelet BEM using the wavelet bases as its functional bases, coefficient matrix and vectors include submatrix and subvector corresponding to each resolution level. Hence, one can readily apply the multigrid method to wavelet BEM. In this paper, V-, Sawtooth-, and FMV-cycles are considered. Numerical experiments show that these methods improve the convergence of iterative solution. As the iterative methods, Jacobi, Bi-CG, and GMRES methods are employed. It is found that the multigrid method can be an effective strategy for enhancement of convergence and stability of these iterative methods.

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