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109122 |
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|a Zhu, Lei
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|a Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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|a Zhu, Lei
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|a Forget, Benoit Robert Yves
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|a Forget, Benoit Robert Yves
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|a An energy recondensation method using the discrete generalized multigroup energy expansion theory
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|b Elsevier,
|c 2017-05-16T18:08:16Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/109122
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|a 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.
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|a en_US
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|a Article
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|t Annals of Nuclear Energy
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