| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4664550 | Acta Mathematica Scientia | 2009 | 13 Pages |
Abstract
Based on an asymptotic expansion of finite element, an extrapolation cascadic multigrid method (EXCMG) is proposed, in which the new extrapolation and quadratic interpolation are used to provide a better initial value on refined grid. In the case of multiple grids, both superconvergence error in H1-norm and the optimal error in /2-norm are analyzed. The numerical experiment shows the advantage of EXCMG in comparison with CMG.
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Physical Sciences and Engineering
Mathematics
Mathematics (General)
