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A subspace cascadic multigrid method for mortar elements
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DOI：10.1007/s00607-002-1460-2.png)
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Abstract
En 中文
A cascadic multigrid (CMG) method for elliptic problems with strong material jumps is proposed and analyzed. Non-matching grids at interfaces between subdomains are allowed and treated by mortar elements. The arising saddle point problems are solved by a subspace confined conjugate gradient method as smoother for the CMG. Details of algorithmic realization including adaptivity are elaborated. Numerical results illustrate the efficiency of the new subspace CMG algorithm.
Keywords:
cascadic multigrid method
domain decomposition
mortar elements
non-matching grids
material jumps