VARIATIONAL ACCELERATION FOR SUBSPACE ITERATION METHOD - APPLICATION TO NUCLEAR-POWER REACTORS

Authors
VIDAL V VERDU G GINESTAR D MUNOZCOBO JL
Citation
V. Vidal et al., VARIATIONAL ACCELERATION FOR SUBSPACE ITERATION METHOD - APPLICATION TO NUCLEAR-POWER REACTORS, International journal for numerical methods in engineering, 41(3), 1998, pp. 391-407
Citations number
18
Categorie Soggetti
Mathematics,Engineering,Mathematics
Journal title
International journal for numerical methods in engineering → ACNP
ISSN journal
00295981
Volume
41
Issue
3
Year of publication
1998
Pages
391 - 407
Database
ISI
SICI code
0029-5981(1998)41:3<391:VAFSIM>2.0.ZU;2-5
Abstract
The Subspace Iteration Method is a popular approach to obtain the domi nant eigenvalues and their corresponding eigenvectors of a given matri x. We have applied this method, making use of two Rayleigh-Ritz projec tions, to obtain the dominant Lambda Modes of a nuclear power reactor. Also, we have developed a variational acceleration technique for this method, and we have stated that this variational acceleration is very convenient, mainly, when the required number of eigenvalues is low. ( C) 1998 John Wiley & Sons, Ltd.