Title :
Randomized computations in domain decomposition methods
Author :
Wei Wang;Marinos N. Vouvakis
Author_Institution :
Department of Electrical and Computer Engineering, University of Massachusetts at Amherst, 01003, United States
fDate :
7/1/2015 12:00:00 AM
Abstract :
An efficient and robust FETI-2λ domain decomposition method (DDM) framework for electromagnetic (EM) modeling is outlined. The proposed framework uses randomized algorithms to approximate the low-rank discrete Dirichlet-to-Neumann (DtN) map interactions that arise in FETI-2λ. The resulting approach is also combined with effective and robust local and global DDM preconditioners. A realistic numerical example is given to verify the effectiveness, efficiency and robustness.
Keywords :
"Approximation algorithms","Approximation methods","Robustness","Matrix decomposition","Transmission line matrix methods","Sparse matrices","Computational modeling"
Conference_Titel :
Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015 IEEE International Symposium on
DOI :
10.1109/APS.2015.7304474
