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Balancing domain decomposition by constraints associated with subobjects

Autor
Badia, S.; Martín, A. F.; Nguyen, H.
Tipus d'activitat
Article en revista
Revista
Applied mathematics letters
Data de publicació
2019-01
Volum
87
Pàgina inicial
93
Pàgina final
100
DOI
https://doi.org/10.1016/j.aml.2018.07.033 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/121251 Obrir en finestra nova
https://www.researchgate.net/publication/326754944_Balancing_domain_decomposition_by_constraints_associated_with_subobjects Obrir en finestra nova
URL
https://www.sciencedirect.com/science/article/pii/S089396591830257X Obrir en finestra nova
Resum
A simple variant of the BDDC preconditioner in which constraints are imposed on a selected set of subobjects (subdomain subedges, subfaces and vertices between pairs of subedges) is presented. We are able to show that the condition number of the preconditioner is bounded by C(1+log(L/h))2, where C is a constant, and h and L are the characteristic sizes of the mesh and the subobjects, respectively. As L can be chosen almost freely, the condition number can theoretically be as small as O(1). We wi...
Citació
Badia, S., Martín, A. F., Nguyen, H. Balancing domain decomposition by constraints associated with subobjects. "Applied mathematics letters", Gener 2019, vol. 87, p. 93-100.
Paraules clau
BDDC FETI-DP Optimal preconditioner Parallel solver Heterogeneous problems
Grup de recerca
(MC)2 - UPC Mecànica de Medis Continus i Computacional
ANiComp - Anàlisi numèrica i computació científica

Participants