Analysis of extrapolation cascadic multigrid method (EXCMG) |
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| Authors: | ChuanMiao Chen HongLing Hu ZiQing Xie ChenLiang Li |
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| Affiliation: | (1) College of Mathematics and Computer Science, Hunan Normal University, Changsha, 410081, China |
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| Abstract: | Based on an asymptotic expansion of finite element,a new extrapolation formula and extrapolation cascadic multigrid method(EXCMG)are proposed,in which the new extrapolation and quadratic interpolation are used to provide a better initial value on refined grid.In the case of triple grids,the error of the new initial value is analyzed in detail.A larger scale computation is completed in PC. |
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| Keywords: | cascadic multigrid finite element new extrapolation error analysis |
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