An energy recondensation method using the discrete generalized multigroup energy expansion theory
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Author(s)
Zhu, Lei
Forget, Benoit Robert Yves
Date Issued
May 2011
Journal
Annals of Nuclear Energy
Publisher
Elsevier
Citation
Zhu, Lei and Forget, Benoit. “An Energy Recondensation Method Using the Discrete Generalized Multigroup Energy Expansion Theory.” Annals of Nuclear Energy 38, no. 8 (August 2011): 1718–1727. © 2011 Elsevier Ltd
Version
Author's final manuscript
Abstract
In this paper, the discrete generalized multigroup (DGM) method was used to recondense the coarse group cross-sections using the core level solution, thus providing a correction for neighboring effect found at the core level. This approach was tested using a discrete ordinates implementation in both 1-D and 2-D. Results indicate that 2 or 3 iterations can substantially improve the flux and fission density errors associated with strong interfacial spectral changes as found in the presence of strong absorbers, reflector of mixed-oxide fuel. The methodology is also proven to be fully consistent with the multigroup methodology as long as a flat-flux approximation is used spatially.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
http://dx.doi.org/10.1016/j.anucene.2011.04.008
