Self-correcting Multigrid Solver.

Lewandowski, J. L. V.

Technical Information Center Oak Ridge Tennessee

关键词: Damping;    Convergence;    Algorithms;    Grids;    Source terms;   

RP-ID  :  DE2004828268

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A new multigrid algorithm based on the method of self-correction for the solution of elliptic problems is described. The method exploits information contained in the residual to dynamically modify the source term (right-hand side) of the elliptic problem. It is shown that the self-correcting solver is more efficient at damping the short wavelength modes of the algebraic error than its standard equivalent. When used in conjunction with a multigrid method, the resulting solver displays an improved convergence rate with no additional computational work.