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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.
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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

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  • HAL Id : hal-02419626, version 1

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J.-F. Vidal, P. Archier, B. Faure, V. Jouault, J.-M. Palau, et al.. Apollo3 homogenization techniques for transport core calculations - application to the astrid cfv core. MandC 2017 - International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering, Apr 2017, Jeju, South Korea. ⟨hal-02419626⟩

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