| Issue |
EPJ Web Conf.
Volume 247, 2021
PHYSOR2020 – International Conference on Physics of Reactors: Transition to a Scalable Nuclear Future
|
|
|---|---|---|
| Article Number | 02008 | |
| Number of page(s) | 8 | |
| Section | Core Analysis Methods | |
| DOI | https://doi.org/10.1051/epjconf/202124702008 | |
| Published online | 22 February 2021 | |
https://doi.org/10.1051/epjconf/202124702008
COUPLING OF nTRACER TO COBRA-TF FOR HIGH-FIDELITY ANALYSIS OF VVERs
1 Nuclear Energy and Safety Division (NES), Paul Scherrer Institute (PSI) 5232 Villigen Switzerland
2 Reactor Physics Laboratory (RPL), Seoul National University (SNU) 08826 Seoul, South Korea
marianna.papadionysiou@psi.ch
rayofstar@snu.ac.kr
mathieu.hursin@psi.ch
alexander.vasiliev@psi.ch
hakim.ferroukhi@psi.ch
andreas.pautz@psi.ch
joohan@snu.ac.kr
Published online: 22 February 2021
Paul Scherrer Institut is developing a high-resolution multi-physics core solver for VVER analysis. This work presents the preliminary stages of the development, specifically the coupling of the 3D pin-by-pin neutronic solver nTRACER to the sub-channel thermal-hydraulic code COBRA-TF for single assembly multi-physics steady state calculations. The coupling scheme and the modifications performed in the codes are described in details. The results of the coupled nTRACER/COBRA-TF calculations are compared to the ones of a standalone nTRACER calculation where the feedbacks are provided by a simplified 1D thermal-hydraulic solver. The agreement is very good with fuel temperature differences around 10 K which can be attributed to the different correlations used in the various solvers. The cross-comparison of the two multi-physics computational routes serves as a preliminary verification of the coupling scheme developed between nTRACER and COBRA-TF.
Key words: high-resolution / multi-physics / nTRACER / COBRA-TF / VVER
© The Authors, published by EDP Sciences, 2021
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