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Enhanced balancing Neumann-Neumann preconditioning in computational fluid and solid mechanics

Autor
Badia, S.; Martín, A. F.; Principe, J.
Tipus d'activitat
Article en revista
Revista
International journal for numerical methods in engineering
Data de publicació
2013-10
Volum
96
Número
4
Pàgina inicial
203
Pàgina final
230
DOI
https://doi.org/10.1002/nme.4541 Obrir en finestra nova
URL
http://onlinelibrary.wiley.com/doi/10.1002/nme.4541/abstract Obrir en finestra nova
Resum
In this work, we propose an enhanced implementation of balancing Neumann–Neumann (BNN) preconditioning together with a detailed numerical comparison against the balancing domain decomposition by constraints (BDDC) preconditioner. As model problems, we consider the Poisson and linear elasticity problems. On one hand, we propose a novel way to deal with singular matrices and pseudo-inverses appearing in local solvers. It is based on a kernel identification strategy that allows us to efficiently ...
Paraules clau
BDDC, BNN, balancing domain decomposition, coarse-grid correction, domain decomposition, elasticity, parallelization, scalability
Grup de recerca
(MC)2 - UPC Mecànica de Medis Continus i Computacional
ANiComp - Anàlisi numèrica i computació científica