Numerical Analysis of the Performance of Lead-Bismuth Centrifugal Pump with High Temperature Closed Circuit under All Operating Conditions

Luo Changyu; Li Yibin; Ma Wensheng; Yang Youchao; Niu Teng

doi:10.13832/j.jnpe.2024.070033

Volume 46 Issue 3

Jun. 2025

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Article Navigation > Nuclear Power Engineering > 2025 > 46(3): 186-194

Luo Changyu, Li Yibin, Ma Wensheng, Yang Youchao, Niu Teng. Numerical Analysis of the Performance of Lead-Bismuth Centrifugal Pump with High Temperature Closed Circuit under All Operating Conditions[J]. Nuclear Power Engineering, 2025, 46(3): 186-194. doi: 10.13832/j.jnpe.2024.070033

Citation:

Luo Changyu, Li Yibin, Ma Wensheng, Yang Youchao, Niu Teng. Numerical Analysis of the Performance of Lead-Bismuth Centrifugal Pump with High Temperature Closed Circuit under All Operating Conditions[J]. Nuclear Power Engineering, 2025, 46(3): 186-194. doi: 10.13832/j.jnpe.2024.070033

Citation:

Luo Changyu, Li Yibin, Ma Wensheng, Yang Youchao, Niu Teng. Numerical Analysis of the Performance of Lead-Bismuth Centrifugal Pump with High Temperature Closed Circuit under All Operating Conditions[J]. Nuclear Power Engineering, 2025, 46(3): 186-194. doi: 10.13832/j.jnpe.2024.070033

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Numerical Analysis of the Performance of Lead-Bismuth Centrifugal Pump with High Temperature Closed Circuit under All Operating Conditions

doi: 10.13832/j.jnpe.2024.070033

1.
School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
2.
Key Laboratory of the Ministry of Education for Special Pump and Valve and Fluid Control Systems, Lanzhou, 730050, China
3.
Chongqing Pump Industry Co., Ltd., Chongqing, 400033, China

Received Date: 2024-07-09
Rev Recd Date: 2024-10-16

Available Online: 2025-06-09

Publish Date: 2025-06-09

Abstract

Abstract

To investigate the thermal-hydraulic performance of lead-bismuth centrifugal pump in a closed-loop system transporting 400℃ liquid Lead-Bismuth eutectic (LBE), a joint simplified modeling approach that integrates the lead-bismuth circulation tank, inlet/outlet pipelines, and centrifugal pump was employed. Utilizing the shear stress transport (SST) k-ω turbulence model, flow characteristics within the pump under three distinct flow rate conditions were systematically analyzed. The study revealed that vortices of varying intensities in the impeller flow channels were associated with fluid force imbalances, with Coriolis forces maintaining dominant influence throughout the LBE transport process. Local entropy production rate (EPR) was primarily concentrated at the leading edge of impeller blades and rotor-stator interface regions, exhibiting a decreasing trend with increasing flow rates. Pressure signal frequencies in the impeller and guide vane channels demonstrated periodic alternations between 93.33 Hz and 116.67 Hz, while wavelet signal intensity became more pronounced near the rotor-stator interface. These findings provide important references for optimizing design and performance evaluation of centrifugal pumps in lead-bismuth reactor systems.
- Lead-Bismuth centrifugal pump,
- High-temperature closed circuit,
- Entropy production,
- Coriolis force,
- Wavelet signal,
- SST k-ω turbulence model

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References(21)

References

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