CTF/DYN3D multi-scale coupled simulation of a rod ejection transient on the NURESIM platform

In the framework of the EU funded project NURESAFE, the subchannel code CTF and the neutronics code DYN3D were integrated and coupled on the NURESIM platform. The developments achieved during this 3-year project include assembly-level and pin-by-pin multiphysics thermal hydraulics/neutron kinetics c...

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Bibliographic Details
Published inNuclear engineering and technology Vol. 49; no. 6; pp. 1339 - 1345
Main Authors Périn, Yann, Velkov, Kiril
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2017
Elsevier
한국원자력학회
Subjects
Coupling
Multi-physics
Multi-scale
Subchannel
원자력공학
Multi-physics
Multi-scale
Coupling
Subchannel
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Summary:In the framework of the EU funded project NURESAFE, the subchannel code CTF and the neutronics code DYN3D were integrated and coupled on the NURESIM platform. The developments achieved during this 3-year project include assembly-level and pin-by-pin multiphysics thermal hydraulics/neutron kinetics coupling. In order to test this coupling, a PWR rod ejection transient was simulated on a MOX/UOX minicore. The transient is simulated using two different models of the minicore. In the first simulation, both codes model the core with an assembly-wise resolution. In the second simulation, a pin-by-pin fuel-centered model is used in CTF for the central assembly, and a pin power reconstruction method is applied in DYN3D. The analysis shows the influence of the different models on global parameters, such as the power and the average fuel temperature, but also on local parameters such as the maximum fuel temperature.
ISSN:1738-5733
2234-358X
DOI:10.1016/j.net.2017.07.010