Numerical Simulation of Three-dimensional Flow and Heat Transfer Characteristics of Liquid Lead-Bismuth

Shaopeng He; Mingjun Wang; Jing Zhang; Wenxi Tian; Suizheng Qiu; G.H. Su

doi:https://doi.org/10.1016/j.net.2020.12.025

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자료유형: 학술저널

저자정보: Shaopeng He (Xi’an Jiaotong University) Mingjun Wang (Xi’an Jiaotong University) Jing Zhang (Xi’an Jiaotong University) Wenxi Tian (Xi’an Jiaotong University) Suizheng Qiu (Xi’an Jiaotong University) G.H. Su (Xi'an Jiaotong University)

저널정보: 한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제6호

발행연도: 2021.6

수록면: 1,834 - 1,845 (12page)

DOI: https://doi.org/10.1016/j.net.2020.12.025

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Liquid lead-bismuth cooled fast reactor is one of the most promising reactor types among the fourthgenerationnuclear energy systems. The flow and heat transfer characteristics of lead-bismuth eutectic(LBE) are completely different from ordinary fluids due to its special thermal properties, causing that thetraditional Reynolds analogy is no longer recommended and appropriate. More accurate turbulence flowand heat transfer model for the liquid metal lead-bismuth should be developed and applied in CFDsimulation. In this paper, a specific CFD solver for simulating the flow and heat transfer of liquid lead-bismuthbased on the k - ε - kq - εq model was developed based on the open source platform OpenFOAM. Thenthe advantage of proposed model was demonstrated and validated against a set of experimental data. Finally, the simulation of LBE turbulent flow and heat transfer in a 7-pin wire-wrapped rod bundle withthe k - ε - kq - εq model was carried out. The influence of wire on the flow and heat transfer characteristicsand the three-dimensional distribution of key thermal hydraulic parameters such as temperature, crossflowvelocity and Nusselt number were studied and presented. Compared with the traditional SED model with a constant Prt ¼ 1.5 or 2.0, the k - ε - kq - εq model ismore accurate on predicting the turbulence flow and heat transfer of liquid lead-bismuth. The averagerelative error of the k - ε - kq - εq model is reduced by 11.1% at most under the simulation conditions in thispaper. This work is meaningful for the thermal

#Liquid lead-bismuth #Turbulence model #Wire spacers #OpenFOAM

참고문헌 (30)

참고문헌 신청

J. Pacio / 2015 / Heat transfer to liquid metals in a hexagonal rod bundle with grid spacers : experimental and simulation results / Int. J. Nuclear Engineering and Design 290:27~39

F. Roelofs / 2015 / Status and perspective of turbulence heat transfer modelling for the industrial application of liquid metal flows / Int. J. Nuclear Engineering and Design 290:99~106

M. J. Wang / 2021 / Recent progress of CFD applications in PWR thermal hydraulics study and future directions / Int. J. Annals of Nuclear Energy 150:107836

H. Qin / 2019 / Numerical investigation on thermal-hydraulic characteristics of NaK in a helical wire wrapped annulus / Int. J. Heat Mass Transfer 145:118689

X.A. Wang / 2020 / Hybrid medium model for conjugate heat transfer modeling in the core of sodium-cooled fast reactor / Nuclear Engineering and Technology 52(4):708~720

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