CFD Calculation and Analysis of Boiling Heat Transfer of Full-length Fuel Bundle with Bent Rod

Ren Bing; Gan Fujun; Yang Ping

doi:10.13832/j.jnpe.2022.06.0043

Volume 43 Issue 6

Dec. 2022

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Ren Bing, Gan Fujun, Yang Ping. CFD Calculation and Analysis of Boiling Heat Transfer of Full-length Fuel Bundle with Bent Rod[J]. Nuclear Power Engineering, 2022, 43(6): 43-50. doi: 10.13832/j.jnpe.2022.06.0043

Citation:

Ren Bing, Gan Fujun, Yang Ping. CFD Calculation and Analysis of Boiling Heat Transfer of Full-length Fuel Bundle with Bent Rod[J]. Nuclear Power Engineering, 2022, 43(6): 43-50. doi: 10.13832/j.jnpe.2022.06.0043

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CFD Calculation and Analysis of Boiling Heat Transfer of Full-length Fuel Bundle with Bent Rod

doi: 10.13832/j.jnpe.2022.06.0043

Shanghai Nuclear Engineering Research & Design Institute Co., Ltd., Shanghai, 200233, China

Received Date: 2021-11-26
Rev Recd Date: 2021-12-24
Publish Date: 2022-12-14

Abstract

Abstract

The boiling heat transfer in a 5 × 5 full-length fuel bundle containing a bent fuel rod is simulated by computational fluid dynamics (CFD) analysis. The calculation is based on the Eulerian-Eulerian two-fluid model and the improved wall boiling model, and the calculation method is verified based on the test data in the PSBT benchmark task. The calculated average void fraction of the cross section is in good agreement with the test data, which indicates the reliability of the existing calculation methods. Based on the calculation results, the effects of bent rod on the flow field, temperature field, void fraction and other key parameters in the bundle channel are investigated. The research results show that the existence of bent fuel rod has no significant impact on the cross section transverse flow, fluid temperature, void fraction, etc., but the increase of the surface temperature of bent fuel rod will also lead to bubble aggregation, which increases the risk of critical heat flux (CHF).
- Fuel bundle,
- Bending,
- Boiling,
- Computational fluid dynamics(CFD)

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References(10)

References

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