Title :
W-FETI: Global Domain Decomposition preconditioning done right
Author :
Wei Wang;Marinos N. Vouvakis
Author_Institution :
ECE, University of Massachusetts at Amherst, 01003, United States
fDate :
7/1/2015 12:00:00 AM
Abstract :
An effective, efficient and robust algebraic global preconditioner for the FETI-2λ Domain Decomposition Method (DDM) is proposed. The new preconditioner is based on the Woodbury matrix identity, termed as W-FETI, and is inspired by the observation that under certain circumstances the discrete Diritch-to-Newmann (DtN) operators of the domains are rank deficient. Numerical examples showcase the excellent convergence and scalability properties of W-FETI.
Keywords :
"Convergence","Robustness","Matrix decomposition","Scattering","Finite element analysis","Yttrium","Scalability"
Conference_Titel :
Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 IEEE International Symposium on
DOI :
10.1109/APS.2015.7304473
