Numerical Study on Bending Angle Optimization of Rod Bundle Channel Spacer Grid Mixing Vane Based on Subcooled Boiling CFD

Zheng Xu; Sun Lanxin; Huang Junfeng; Zhu Renren; Duan Zhongping; Cheng Xiaoyu; Li Jinrong

doi:10.13832/j.jnpe.2023.05.0071

Volume 44 Issue 5

Oct. 2023

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Zheng Xu, Sun Lanxin, Huang Junfeng, Zhu Renren, Duan Zhongping, Cheng Xiaoyu, Li Jinrong. Numerical Study on Bending Angle Optimization of Rod Bundle Channel Spacer Grid Mixing Vane Based on Subcooled Boiling CFD[J]. Nuclear Power Engineering, 2023, 44(5): 71-79. doi: 10.13832/j.jnpe.2023.05.0071

Citation:

Zheng Xu, Sun Lanxin, Huang Junfeng, Zhu Renren, Duan Zhongping, Cheng Xiaoyu, Li Jinrong. Numerical Study on Bending Angle Optimization of Rod Bundle Channel Spacer Grid Mixing Vane Based on Subcooled Boiling CFD[J]. Nuclear Power Engineering, 2023, 44(5): 71-79. doi: 10.13832/j.jnpe.2023.05.0071

Citation:

Zheng Xu, Sun Lanxin, Huang Junfeng, Zhu Renren, Duan Zhongping, Cheng Xiaoyu, Li Jinrong. Numerical Study on Bending Angle Optimization of Rod Bundle Channel Spacer Grid Mixing Vane Based on Subcooled Boiling CFD[J]. Nuclear Power Engineering, 2023, 44(5): 71-79. doi: 10.13832/j.jnpe.2023.05.0071

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Numerical Study on Bending Angle Optimization of Rod Bundle Channel Spacer Grid Mixing Vane Based on Subcooled Boiling CFD

doi: 10.13832/j.jnpe.2023.05.0071

1.
First Research Institute, Nuclear Power Institute of China, Chengdu, 610213, China
2.
Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, China

Received Date: 2022-11-02
Rev Recd Date: 2022-11-24
Publish Date: 2023-10-13

Abstract

Abstract

The spacer grid is a key component of the fuel assembly. It not only fixes and supports the fuel assembly, but also affects the thermal and hydraulic performance of the fuel assembly. In this paper, the Rensselaer Polytechnic Institute(RPI) wall boiling model based on the Euler-Euler six equations of two fluids is used to carry out a numerical simulation study on the working conditions when subcooled boiling occurs in the 5×5 fuel rod bundle channel; the flow field in the rod bundle channel, the distribution of circumferential wall temperature at different axial heights of the central rod bundle and the distribution of void are obtained. The numerical study results show that the pressure loss of the rod bundle channel increases with the increase of the bending angle of the mixing vane; when the bending angle of the mixing vane is 30°, the proportion of void is relatively small, and the peak temperature of the central rod bundle is relatively low in the downstream of the spacer grid.
- Rod bundle channel,
- Subcooled boiling,
- Numerical study,
- Spacer grid

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References(15)

References

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