Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9662363 | Computers & Mathematics with Applications | 2005 | 8 Pages |
Abstract
In order to emphasize the possible relation between discontinuous and continuous approximations on different meshes, a two-grids method for the resolution of parabolic variational inequality problems is presented. The numerical methodology combines a time splitting algorithm to decouple a diffusion phenomenon from an obstacle problem. The diffusion problem is solved by using finite-differences, while piecewise linear finite-element techniques are used together with a Newton method for the obstacle problem. Projections are used to interpolate the solution from one grid to the other. Numerical experiments show that the resulting method has good accuracy properties.
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Physical Sciences and Engineering
Computer Science
Computer Science (General)
Authors
A. Caboussat, R. Glowinski,