Coupled Monte Carlo and Thermal-Hydraulics Modeling for the Three-Dimensional Steady-State Analysis of the Xi’an Pulsed Reactor

Duoyu Jiang (), Peng Xu, Tianliang Hu, Xinbiao Jiang, Lipeng Wang, Da Li, Xinyi Zhang and Lu Cao
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Duoyu Jiang: Xi’an Research Institute of Hi-Tech, Xi’an 710025, China
Peng Xu: Xi’an Research Institute of Hi-Tech, Xi’an 710025, China
Tianliang Hu: Northwest Institute of Nuclear Technology, Xi’an 710024, China
Xinbiao Jiang: Northwest Institute of Nuclear Technology, Xi’an 710024, China
Lipeng Wang: Northwest Institute of Nuclear Technology, Xi’an 710024, China
Da Li: Northwest Institute of Nuclear Technology, Xi’an 710024, China
Xinyi Zhang: Northwest Institute of Nuclear Technology, Xi’an 710024, China
Lu Cao: Northwest Institute of Nuclear Technology, Xi’an 710024, China

Energies, 2023, vol. 16, issue 16, 1-15

Abstract: The Xi’an Pulsed Reactor (XAPR) is characterized by its small core size and integrated fuel moderator structure, which results in a non-uniform core power and temperature distribution. Consequently, a complex coupling relationship exists between its core neutronics and thermal hydraulics, necessitating the assurance for the operational safety of the XAPR. To optimize the experimental scheme in the reactor, a refined three-dimensional steady-state nuclear-thermal coupling analysis is imperative. This study focuses on investigating the coupling calculation of a three-dimensional steady-state neutronics and thermal-hydraulics model for the XAPR by utilizing an open-source multi-physical coupling framework known as Cardinal. The neutron transport equation is effectively solved using OpenMC, while a three-dimensional heat conduction model is employed to compute the heat conduction of the fuel elements. Furthermore, a parallel multi-channel model is utilized to determine the fluid heat transfer. The research is centered on the XAPR, whereby Monte Carlo and thermal-hydraulics coupling calculations of the core under steady-state full-power conditions are conducted, specifically at an operational capacity of 2 MW. The results demonstrate a strong agreement between the simulation and experimental outcomes. The maximum temperature recorded for the thermometric fuel element in the XAPR is 795.1 K, with a deviation of approximately −5.7% from the measured value. Moreover, the outlet fluid temperature of the thermal channel is observed to be 360 K, exhibiting a deviation of around −2.7% from the measured value.

Keywords: Xi’an Pulsed Reactor; nuclear reactor physics; reactor thermal-hydraulics; multi-physics coupling (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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