CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 1998, Vol. 15 ›› Issue (1): 53-57.

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SELECTION OF RELAXATION FACTOR AND CONVERGENCE RATE FOR D-N DOMAIN DECOMPOSITION METHOD OVER UNBOUNDED DOMAIN

Yu Dehao   

  1. State Key Laboratory of Scientific and Engineering ComputingInstitute of Computational Mathematics and Scientific/Engineering Computing Chinese Academy of Sciences, Beijing 100080
  • Received:1997-03-12 Revised:1997-05-07 Online:1998-01-25 Published:1998-01-25

Abstract: The selection of relaxation factor plays a key role in D-N domain decomposition methods (DDM). Based on the natural boundary reduction, the D-N DDM for elliptic problems over unbounded domain is discussed. A simple and convenient approach to selection of relaxation factor is given, and an optimal convergence is obtained.

Key words: Dirichlet-Neumann (D-N) DDM, unbounded domain, relaxation factor, natural boundary reduction

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