http://www.cnr.it/ontology/cnr/individuo/prodotto/ID31241
The method of mothers for non-overlapping non-matching DDM (Articolo in rivista)
- Type
- Label
- The method of mothers for non-overlapping non-matching DDM (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s00211-007-0090-1 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Bertoluzza S., Brezzi F., Sangalli G. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- Scopu (literal)
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Istituto di Matematica Applicata e Tecnologie Informatiche del CNR, Pavia;
Dipartimento di Matematica, Universita' di Pavia;
Istituto Universitario di Studi Superiori di Pavia. (literal)
- Titolo
- The method of mothers for non-overlapping non-matching DDM (literal)
- Abstract
- In this paper we introduce a variant of the three-field formulation where we use only two sets of variables. Considering, to fix the ideas, the Poisson equation
with homogeneous Dirichlet boundary conditions in ?, our variables are i) the approximations uh of u in each sub-domain (each on its own grid),
and ii) an approximation ?h of u on the skeleton (the union of the interfaces of the sub-domains) on an independent grid (that could often be uniform).
The novelty is in the way to derive, from ?h, the values of the trace of uh on the boundary of each subdomain. We do it by solving an auxiliary
problem on each subdomain boundary that resembles the mortar method but is more flexible. Under suitable assumptions, quasi-optimal error
estimates are proved, uniformly with respect to the number and size of the subdomains. A preliminary version of the method and of its theoretical
analysis has been presented in Bertoluzza et al. (15th international conference on domain decomposition methods, 2002). (literal)
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