Convergence of sequential and parallel one-node CMFD accelerations for neutron transport analysis
In this study, the convergence rates of the two one-node CMFDs were evaluated for the sequential and the parallel algorithm. The results from the Fourier analyses and the numerical simulations showed good agreement, except for the parallel algorithm in optically thin region as an effect of boundary condition is appeared. The one-node CMFD showed instabilities in both sequential and the parallel algorithm with large scattering ratio. On the other hand, the one-node pCMFD was everywhere stable according to this study. From this result, the one-node pCMFD was found to be a better option for the parallel algorithm.
- Publisher
- American Nuclear Society
- Issue Date
- 2018-06
- Language
- English
- Citation
2018 Transactions of the American Nuclear Society, ANS 2018 and Embedded Topical Meeting Nuclear Fuels and Structural Materials, pp.361 - 364
- ISSN
- 0003-018X
- Appears in Collection
- NE-Conference Papers(학술회의논문)
- Files in This Item
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