Optimization of the Subspace Iteration Method for the Lambda Modes Determination of a Nuclear Power Reactor
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<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 of Nuclear Science and Technology
Journal of Nuclear Science and Technology 34(9), 939-947, 1997-09-25
Atomic Energy Society of Japan