Analysis and Research on the Influence of Closed Loop Structure on Main Pump Performance Based on Source Term Method

Wang Xiaofang; Li Jialing; Lu yeming; Liu Haoran; Li Yingyue; Wang Hui; Cui Huiru

doi:10.13832/j.jnpe.2022.06.0030

Volume 43 Issue 6

Dec. 2022

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Article Navigation > Nuclear Power Engineering > 2022 > 43(6): 30-36

Wang Xiaofang, Li Jialing, Lu yeming, Liu Haoran, Li Yingyue, Wang Hui, Cui Huiru. Analysis and Research on the Influence of Closed Loop Structure on Main Pump Performance Based on Source Term Method[J]. Nuclear Power Engineering, 2022, 43(6): 30-36. doi: 10.13832/j.jnpe.2022.06.0030

Citation:

Wang Xiaofang, Li Jialing, Lu yeming, Liu Haoran, Li Yingyue, Wang Hui, Cui Huiru. Analysis and Research on the Influence of Closed Loop Structure on Main Pump Performance Based on Source Term Method[J]. Nuclear Power Engineering, 2022, 43(6): 30-36. doi: 10.13832/j.jnpe.2022.06.0030

Citation:

Wang Xiaofang, Li Jialing, Lu yeming, Liu Haoran, Li Yingyue, Wang Hui, Cui Huiru. Analysis and Research on the Influence of Closed Loop Structure on Main Pump Performance Based on Source Term Method[J]. Nuclear Power Engineering, 2022, 43(6): 30-36. doi: 10.13832/j.jnpe.2022.06.0030

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Analysis and Research on the Influence of Closed Loop Structure on Main Pump Performance Based on Source Term Method

doi: 10.13832/j.jnpe.2022.06.0030

1.
School of Energy and Power Engineering, Dalian University of Technology, Dalian, Liaoning, 116000, China
2.
Training base, Army Engineering University, Xuzhou, Jiangsu, 221000, China
3.
National Defense Engineering College, Army Engineering University, Nanjing, 210000, China

Received Date: 2021-12-07
Rev Recd Date: 2021-12-23
Publish Date: 2022-12-14

Abstract

Abstract

The traditional main pump flow analysis platform is mostly a simplified open flow path, which is quite different from the real closed loop operation conditions. In order to explore the flow characteristics and mechanism of the main pump in the real loop, this paper takes the full-channel hydraulic model of the main pump with seal ring clearance as the research object, and uses the source term method for steady-state and transient calculation and analysis. The steady-state calculation results show that the vortex flow pattern is formed in the closed circulation loop, which leads to pre-swirl at the inlet of the main pump and inflow distortion, resulting in the increase of turbulent kinetic energy and uneven energy distribution. The transient calculation results show that compared with the open flow path, the inflow distortion of the closed loop brings changes in the characteristics of flow field pressure, velocity, turbulent kinetic energy and pressure fluctuation, which leads to the decrease of pump head and efficiency and the increase of radial force and axial force. The analysis of the flow performance of the main pump based on the closed loop structure is closer to the real flow.
- Nuclear main pump,
- Closed circulation,
- Source term method,
- Inflow distortion,
- Numerical simulation

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References(18)

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