Effect of the Arrangement for Grid Spacers with Mixing Vanes on the Thermal Hydraulic Characteristics of a 5×5 Rod Bundle via CFD Analysis

Su Qianhua; Fan Guanhua; Lyu Lulu; Lu Donghua; Yang Ping; Gan Fujun; Yan Binghuo; Wang Chengyue

doi:10.13832/j.jnpe.2023.04.0088

Volume 44 Issue 4

Aug. 2023

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Article Navigation > Nuclear Power Engineering > 2023 > 44(4): 88-94

Su Qianhua, Fan Guanhua, Lyu Lulu, Lu Donghua, Yang Ping, Gan Fujun, Yan Binghuo, Wang Chengyue. Effect of the Arrangement for Grid Spacers with Mixing Vanes on the Thermal Hydraulic Characteristics of a 5×5 Rod Bundle via CFD Analysis[J]. Nuclear Power Engineering, 2023, 44(4): 88-94. doi: 10.13832/j.jnpe.2023.04.0088

Citation:

Su Qianhua, Fan Guanhua, Lyu Lulu, Lu Donghua, Yang Ping, Gan Fujun, Yan Binghuo, Wang Chengyue. Effect of the Arrangement for Grid Spacers with Mixing Vanes on the Thermal Hydraulic Characteristics of a 5×5 Rod Bundle via CFD Analysis[J]. Nuclear Power Engineering, 2023, 44(4): 88-94. doi: 10.13832/j.jnpe.2023.04.0088

Citation:

Su Qianhua, Fan Guanhua, Lyu Lulu, Lu Donghua, Yang Ping, Gan Fujun, Yan Binghuo, Wang Chengyue. Effect of the Arrangement for Grid Spacers with Mixing Vanes on the Thermal Hydraulic Characteristics of a 5×5 Rod Bundle via CFD Analysis[J]. Nuclear Power Engineering, 2023, 44(4): 88-94. doi: 10.13832/j.jnpe.2023.04.0088

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Effect of the Arrangement for Grid Spacers with Mixing Vanes on the Thermal Hydraulic Characteristics of a 5×5 Rod Bundle via CFD Analysis

doi: 10.13832/j.jnpe.2023.04.0088

1.
China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen, Guangdong, 518026, China
2.
Shanghai Nuclear Engineering Research & Design Institute Co., Ltd, Shanghai, 200233, China
3.
Sun Yat-sen University, Zhuhai, Guangdong, 519082, China
4.
Nanjing University of Science and Technology, Nanjing, 210094, China

Received Date: 2022-08-11
Rev Recd Date: 2022-10-10
Publish Date: 2023-08-15

Abstract

Abstract

In order to optimize the arrangement of the grid spacer for a rod bundle, the computational fluid dynamics (CFD) method is employed to analyze the flow and temperature fields for a 5×5 rod bundle equipped with three grid spacers. The effect of the axial separation between two neighboring grid spacers and the relative rotation angle of the grid spacer is investigated, and the reasons for different results are analyzed from the perspective of convective heat transfer. It is found that the variation of axial separation brings negligible change on the drag and heat-transfer characteristics of the rod bundle. However, rotating the middle grid by 90° relative to the grids at both ends in the cross section can effectively reduce the non-uniformity of temperature distribution in the cross section and reduce the maximum temperature in the cross section.
- CFD,
- Grid spacer,
- 5×5 rod bundle

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References(13)

References

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