Optimization of the Subspace Iteration Method for the Lambda Modes Determination of a Nuclear Power Reactor.

• VIDAL V.

  Departamento de Sistemas Informaticos y Computacion, Universidad Politecnica de Valencia

• GARAYOA J.

  Departamento de Sistemas Informaticos y Computacion, Universidad Politecnica de Valencia

• VERDU G.

  Departamento de Ingenieria Quimica y Nuclear, Universidad Politecnica de Valencia

• GINESTAR D.

  Departamento de Matematica Aplicada, Universidad Politecnica de Valencia

Bibliographic Information

Other Title

• Optimization of the Subspace Iteration

Abstract

<BR>In this paper, we propose different alternative approaches to optimize the subspace iteration method which obtains the dominant λ-modes of a nuclear power reactor. We present a variational acceleration for the iterative process, a coarse grain parallelizatization approach, and a multistep algorithm to choose efficient initial estimations for the subspace iteration method. We have tested the efficiency of the developed algorithms with a 3D realistic problem, corresponding to a static configuration of the reactor Ringhals I.

Journal

• Journal of Nuclear Science and Technology

  Journal of Nuclear Science and Technology 34 (9), 939-947, 1997

  Atomic Energy Society of Japan

Keywords

• nodal methods
• nodal collocation methods
• lambda modes
• eigenvalues calculation
• variational acceleration
• coarse grain parallelization
• initialization procedure
• subspace iteration method
• optimization

Details

• CRID: 1390282679072576768
• NII Article ID: 10002078181
• NII Book ID: AA00703720
• DOI: 10.3327/jnst.34.939
• COI: 1:CAS:528:DyaK2sXnt1aguro%3D
• ISSN: 18811248
• ISSN: 00223131
• NDL BIB ID: 4307556
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4307556
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed