Projected Krylov Methods for Solving Non-Symmetric Two-by-Two Block Linear Systems Arising from Fictitious Domain Formulations

Projected Krylov Methods for Solving Non-Symmetric Two-by-Two Block Linear Systems Arising from Fictitious Domain Formulations

The paper deals with the solution of large non-symmetric two-by-two block linear systems with a singular leading submatrix. Our algorithm consists of two levels. The outer level combines the Schur complement reduction with the orthogonal projectors that leads to the linear equation on subspaces. To...

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Bibliographic Details
Main Authors: Radek Kucera, Tomas Kozubek, Alexandros Markopoulos, Jaroslav Haslinger, Lukas Mocek
Format: Article
Language:English
Published: VSB-Technical University of Ostrava 2014-01-01
Series:Advances in Electrical and Electronic Engineering
Subjects:
domain decomposition
fictitious domain
gmres
krylov method
null-space method
orthogonal projector
schur complement.
Online Access:http://advances.utc.sk/index.php/AEEE/article/view/1045

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