Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9509426 | Journal of Computational and Applied Mathematics | 2005 | 17 Pages |
Abstract
A new procedure for accelerating the convergence of mixed finite element approximations of the eigenpairs and of the biharmonic operator is proposed. It is based on a postprocessing technique that involves an additional solution of a source problem on an augmented finite element space. This space could be obtained either by substantially refining the grid, the two-grid method, or by using the same grid but increasing the order of polynomials by one, the two-space method. The numerical results presented and discussed in the paper illustrate the efficiency of the postprocessing method.
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
A.B. Andreev, R.D. Lazarov, M.R. Racheva,