Numerical Study on Characteristics of Subcooled Flow Boiling with the Coupling Effect of 3×3 Petal-Shaped Fuel Rods and Coolant

Du Lipeng; Song Shangdian; Cai Weihua; Jiang Zeping; Cheng Qi; Zhang Wenchao; Jin Guangyuan

doi:10.13832/j.jnpe.2024.04.0087

Volume 45 Issue 4

Aug. 2024

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Article Navigation > Nuclear Power Engineering > 2024 > 45(4): 87-95

Du Lipeng, Song Shangdian, Cai Weihua, Jiang Zeping, Cheng Qi, Zhang Wenchao, Jin Guangyuan. Numerical Study on Characteristics of Subcooled Flow Boiling with the Coupling Effect of 3×3 Petal-Shaped Fuel Rods and Coolant[J]. Nuclear Power Engineering, 2024, 45(4): 87-95. doi: 10.13832/j.jnpe.2024.04.0087

Citation:

Du Lipeng, Song Shangdian, Cai Weihua, Jiang Zeping, Cheng Qi, Zhang Wenchao, Jin Guangyuan. Numerical Study on Characteristics of Subcooled Flow Boiling with the Coupling Effect of 3×3 Petal-Shaped Fuel Rods and Coolant[J]. Nuclear Power Engineering, 2024, 45(4): 87-95. doi: 10.13832/j.jnpe.2024.04.0087

Citation:

Du Lipeng, Song Shangdian, Cai Weihua, Jiang Zeping, Cheng Qi, Zhang Wenchao, Jin Guangyuan. Numerical Study on Characteristics of Subcooled Flow Boiling with the Coupling Effect of 3×3 Petal-Shaped Fuel Rods and Coolant[J]. Nuclear Power Engineering, 2024, 45(4): 87-95. doi: 10.13832/j.jnpe.2024.04.0087

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Numerical Study on Characteristics of Subcooled Flow Boiling with the Coupling Effect of 3×3 Petal-Shaped Fuel Rods and Coolant

doi: 10.13832/j.jnpe.2024.04.0087

1.
Laboratory of Thermo-Fluid Science and Nuclear Engineering, School of Energy and Power Engineering, Northeast Electric Power University, Jilin, Jilin, 132012, China
2.
Electric Power Research Institute of Jilin Electric Power Co., Ltd., Changchun, 130012, China

Received Date: 2023-08-29
Rev Recd Date: 2023-11-10
Publish Date: 2024-08-12

Abstract

Abstract

In order to promote the engineering application of petal-shaped fuel rods in water-cooled reactors, it is necessary to understand the subcooled flow boiling characteristics of coolant in the sub-channels of petal-shaped fuel rod bundles. The Euler model and wall boiling model were applied to numerically simulate the subcooled flow boiling under the coupling effect of 3×3 petal-shaped fuel rods and coolant. Using the simulation results, the distribution of parameters such as void fraction, wall temperature and transverse flow velocity in different sub-channels, as well as the effects of uniform heating mode and axial cosine heating mode on flow and heat transfer were explored. The research results indicate that subcooled boiling occurs first on corner fuel rods, and with the increase of heating power, the position unevenness of onset of nucleate boilding (ONB) of subcooled boiling of the corner, edge and center fuel rods decreases. Under the same heating conditions, the wall superheat at ONB on the corner fuel rod is the largest, followed by the edge fuel rod and the center fuel rod is the smallest. The surface heat flux at the inner concave arc of the fuel rod is greater than that at the outer convex arc. Under the condition of constant total heating, cosine heating reduces the non-uniformity of wall temperature compared with uniform heating.
- Small-scale nuclear reactor,
- Petal-shaped fuel rod,
- Subcooled flow boiling,
- Onset of nucleate boiling (ONB)

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References(22)

References

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