Verification and Analysis of Fine Subchannel Rod Bowing Model

Zhou Shan; Jiang Li; Shan Jianqiang; Guo Junliang

doi:10.13832/j.jnpe.2024.01.0065

Volume 45 Issue 1

Feb. 2024

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Zhou Shan, Jiang Li, Shan Jianqiang, Guo Junliang. Verification and Analysis of Fine Subchannel Rod Bowing Model[J]. Nuclear Power Engineering, 2024, 45(1): 65-71. doi: 10.13832/j.jnpe.2024.01.0065

Citation:

Zhou Shan, Jiang Li, Shan Jianqiang, Guo Junliang. Verification and Analysis of Fine Subchannel Rod Bowing Model[J]. Nuclear Power Engineering, 2024, 45(1): 65-71. doi: 10.13832/j.jnpe.2024.01.0065

Zhou Shan, Jiang Li, Shan Jianqiang, Guo Junliang. Verification and Analysis of Fine Subchannel Rod Bowing Model[J]. Nuclear Power Engineering, 2024, 45(1): 65-71. doi: 10.13832/j.jnpe.2024.01.0065

Citation:

Zhou Shan, Jiang Li, Shan Jianqiang, Guo Junliang. Verification and Analysis of Fine Subchannel Rod Bowing Model[J]. Nuclear Power Engineering, 2024, 45(1): 65-71. doi: 10.13832/j.jnpe.2024.01.0065

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Verification and Analysis of Fine Subchannel Rod Bowing Model

doi: 10.13832/j.jnpe.2024.01.0065

School of Nuclear Science and Technology, Xi’an Jiaotong University, Xi’an, 710049, China

Received Date: 2023-03-08
Rev Recd Date: 2023-04-17
Publish Date: 2024-02-15

Abstract

Abstract

In order to improve the prediction ability of the sub-channel code for the local parameter changes under rod-bowing condition, a fined sub-channel rod-bowing model was developed in this study. The model, based on a detailed division of the sub-channels, allows a comprehensive analysis of rod bowing. The prediction ability of the fined sub-channel rod-bowing model on the axial flow and cross flow of the sub-channel was validated by computational fluid dynamics (CFD). Based on the validity of the model by CFD, the analysis of the trends of axial and transverse flows in the rod-bowing section was conducted. The results show that the predictions of the changing trends of axial flow and cross flow by ATHAS and CFD are basically consistent, and the fined sub-channel rod bowing model can better predict the changing trend of axial flow and cross flow caused by rod bowing. Therefore, the fined sub-channel rod bowing model can predict the influence of bowing rod on local flow field, which provides a basis for the prediction of critical heat flux.
- Fine sub-channels,
- Rod bowing,
- Distributed resistance model

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References(18)

References

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