Numerical Study on Boiling Heat Transfer and Thermal-Mechanical Characteristics of Helical Cruciform Fuel Assembly

Cong Tenglong; Gao Yong; Cheng Yi; Cai Mengke; Zhang Qi; Xiao Yao; Liu Maolong; Gu Hanyang

doi:10.13832/j.jnpe.2023.05.0216

Volume 44 Issue 5

Oct. 2023

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Article Navigation > Nuclear Power Engineering > 2023 > 44(5): 216-222

Cong Tenglong, Gao Yong, Cheng Yi, Cai Mengke, Zhang Qi, Xiao Yao, Liu Maolong, Gu Hanyang. Numerical Study on Boiling Heat Transfer and Thermal-Mechanical Characteristics of Helical Cruciform Fuel Assembly[J]. Nuclear Power Engineering, 2023, 44(5): 216-222. doi: 10.13832/j.jnpe.2023.05.0216

Citation:

Cong Tenglong, Gao Yong, Cheng Yi, Cai Mengke, Zhang Qi, Xiao Yao, Liu Maolong, Gu Hanyang. Numerical Study on Boiling Heat Transfer and Thermal-Mechanical Characteristics of Helical Cruciform Fuel Assembly[J]. Nuclear Power Engineering, 2023, 44(5): 216-222. doi: 10.13832/j.jnpe.2023.05.0216

Citation:

Cong Tenglong, Gao Yong, Cheng Yi, Cai Mengke, Zhang Qi, Xiao Yao, Liu Maolong, Gu Hanyang. Numerical Study on Boiling Heat Transfer and Thermal-Mechanical Characteristics of Helical Cruciform Fuel Assembly[J]. Nuclear Power Engineering, 2023, 44(5): 216-222. doi: 10.13832/j.jnpe.2023.05.0216

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Numerical Study on Boiling Heat Transfer and Thermal-Mechanical Characteristics of Helical Cruciform Fuel Assembly

doi: 10.13832/j.jnpe.2023.05.0216

1.
School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
2.
China Nuclear Power Technology Research Institute Co., Ltd., Shenzhen, Guangdong, 518000, China

Received Date: 2023-06-07
Rev Recd Date: 2023-07-12
Publish Date: 2023-10-13

Abstract

Abstract

The helical cruciform fuel (HCF) assembly is an innovative design for nuclear reactor fuel. Compared to the traditional cylinder or plate type fuel, the HCF assembly has the features of intensive mixing, self-support and no requirement of spacer grid. The two-phase conjugate heat transfer model for HCF assembly and the thermal-mechanical analysis model for HCF rod were built to evaluate the performances of HCF from the aspects of thermohydraulics and mechanics, respectively. The distributions of fuel rod and coolant temperature and coolant void fraction under two-phase conditions, and the fuel rod stress distribution under different burnup were obtained. The results show that the HCF assembly can reduce the fuel center temperature and the average surface heat flux compared with traditional circular rod fuel assembly. When boiling crisis was triggered, the linear heat flux of HCF assembly was higher than that of traditional fuel assembly. The preliminary thermal-mechanical analysis shows that the fuel rod is subject to great stress under irradiation for HCF elements with metal core without air gap.
- Helical cruciform fuel (HCF),
- Boiling heat transfer,
- Critical heat flux (CHF),
- Mixing,
- Thermal-mechanical,
- Fuel performance

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References(10)

References

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