Numerical Study on the Influence of Thermal-mechanical Coupling Deformation on the Hydraulic Characteristics of Lead-bismuth Pumps

Cheng Xinsheng; Wang Fujun; Wang Jinwei; Wang Zhen; Zeng Huangpeng

doi:10.13832/j.jnpe.2024.070052

Volume 46 Issue 4

Aug. 2025

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Article Navigation > Nuclear Power Engineering > 2025 > 46(4): 60-67

Cheng Xinsheng, Wang Fujun, Wang Jinwei, Wang Zhen, Zeng Huangpeng. Numerical Study on the Influence of Thermal-mechanical Coupling Deformation on the Hydraulic Characteristics of Lead-bismuth Pumps[J]. Nuclear Power Engineering, 2025, 46(4): 60-67. doi: 10.13832/j.jnpe.2024.070052

Citation:

Cheng Xinsheng, Wang Fujun, Wang Jinwei, Wang Zhen, Zeng Huangpeng. Numerical Study on the Influence of Thermal-mechanical Coupling Deformation on the Hydraulic Characteristics of Lead-bismuth Pumps[J]. Nuclear Power Engineering, 2025, 46(4): 60-67. doi: 10.13832/j.jnpe.2024.070052

Citation:

Cheng Xinsheng, Wang Fujun, Wang Jinwei, Wang Zhen, Zeng Huangpeng. Numerical Study on the Influence of Thermal-mechanical Coupling Deformation on the Hydraulic Characteristics of Lead-bismuth Pumps[J]. Nuclear Power Engineering, 2025, 46(4): 60-67. doi: 10.13832/j.jnpe.2024.070052

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Numerical Study on the Influence of Thermal-mechanical Coupling Deformation on the Hydraulic Characteristics of Lead-bismuth Pumps

doi: 10.13832/j.jnpe.2024.070052

1.
Zhefu Holding Group Co., Ltd., Hangzhou, 311100, China
2.
Hangzhou Zhefu Nuclear Power Equipment Co., Ltd., Hangzhou, 311504, China
3.
School of Aeronautics and Astronautics, Zhejiang University, Hangzhou, 310027, China

Received Date: 2024-07-24
Rev Recd Date: 2024-09-29
Publish Date: 2025-08-15

Abstract

Abstract

In order to study the influence of thermal-mechanical deformation coupling on the hydraulic characteristics of lead-bismuth eutectic (LBE) pumps, the temperature and flow field distribution characteristics of the LBE pumps in the design state were obtained through numerical simulations. The structural deformation of the LBE pumps considering thermal-mechanical coupling effects was studied, and the changes in key dimensions of the flow passage components were analyzed. The LBE pumps before and after deformation was used as a model for full channel numerical calculations, and the influence of thermal-mechanical coupling deformation on the hydraulic characteristics of the LBE pumps was compared and analyzed. The results indicate that the thermal-mechanical coupling effect induces dimensional expansion in flow passage components such as the impeller and guide vanes of the LBE pump in both radial and axial directions, and the blade angle changes. The thermal-mechanical coupling deformation has a relatively small influence on the hydraulic characteristics of LBE pumps under design conditions. When deviating from the design conditions, the head increases in the impeller area, the energy loss intensifies in the guide vane area, and the flow characteristics are significantly changed, resulting in a significant difference of the hydraulic characteristics compared to the design state.
- Lead-bismuth eutectic(LBE) pump,
- Thermal-mechanical coupling effects,
- Deformation,
- Hydraulic performance

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References(19)

References

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