Coupling of nTRACER to COBRA-TF for full core high-fidelity analysis of VVERs
- Nuclear Energy and Safety Division - NES, Paul Scherrer Institute - PSI, 5232 Villigen (Switzerland)
- Reactor Physics Laboratory - RPL, Seoul National University - SNU, 08826 Seoul (Korea, Republic of)
The evolution of computing clusters allows the use of high-resolution multi-physics solvers for reactor analysis. Despite the continuous expansion of VVER technology, only one other high-fidelity sub-pin multi-physics core solver is currently developed for safety analysis. To that end the Laboratory of Reactor Physics and Thermal-Hydraulics (LRT) of Paul Scherrer Institut is developing such a tool with the coupling of the neutronic code nTRACER and the sub-channel code COBRA-TF. This work follows the initial steps of the coupling and focuses to the extension of the core solver to full core VVER geometries. The X2 VVER-1000 benchmark is modeled with the novel core solver. The results are compared to the ones of a standalone nTRACER calculation where the feedbacks are provided by a simplified 1D thermal-hydraulic solver. Despite relatively good agreement in power distribution, the limitations of the simplified solver become apparent especially when comparing global temperature profiles. (authors)
- Research Organization:
- American Nuclear Society - ANS, La Grange Park, IL 60526 (United States)
- OSTI ID:
- 23178724
- Resource Relation:
- Conference: PHYSOR 2022: International conference on physics of reactors, Pittsburg (United States), 15-20 May 2022; Other Information: Country of input: France; 16 refs.; Related Information: In: Proceedings of the international conference on physics of reactors - Physor 2022| 3701 p.
- Country of Publication:
- United States
- Language:
- English
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