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Apollo3 homogenization techniques for transport core calculations - application to the astrid cfv core
Abstract : This paper presents a comparison of homogenization techniques implemented in the APOLLO3 platform for transport core calculations standard scalar flux weighting and new flux-moments homogenization, in different combinations with (or without) leakage models. Besides the historical B1-homogeneous model, a new B-heterogeneous one has indeed been recently implemented in the TDT/MOC solver. First analyses have been performed on a very simple SFR core with a regular hexagonal lattice. They show that using the heterogeneous leakage model in association with the flux-moments homogenization strongly improves the prediction of Keff and void reactivity effects. These good results are confirmed when the application is done to the fissile assemblies of the more complex ASTRID CFV core.
Cited literature [18 references]
https://hal.archives-ouvertes.fr/hal-02419626
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Submitted on : Thursday, December 19, 2019 - 3:41:50 PM
Last modification on : Monday, July 27, 2020 - 12:56:02 PM
Long-term archiving on: : Friday, March 20, 2020 - 9:22:25 PM
Contributor : Amplexor Amplexor Connect in order to contact the contributor
Submitted on : Thursday, December 19, 2019 - 3:41:50 PM
Last modification on : Monday, July 27, 2020 - 12:56:02 PM
Long-term archiving on: : Friday, March 20, 2020 - 9:22:25 PM
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201700000260.pdf
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