Research on Thermal-fluid-structure Coupling Behavior for U-10Mo/Al Fuel Assemblies under Irradiation

Yuan Pan; Wang Haoyu; Huang Shan; Liu Menglong; Yue Ti; Ren Quanyao; Qin Mian; Zheng Lele; Guo Zixuan

doi:10.13832/j.jnpe.2023.S2.0011

Volume 44 Issue S2

Dec. 2023

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Yuan Pan, Wang Haoyu, Huang Shan, Liu Menglong, Yue Ti, Ren Quanyao, Qin Mian, Zheng Lele, Guo Zixuan. Research on Thermal-fluid-structure Coupling Behavior for U-10Mo/Al Fuel Assemblies under Irradiation[J]. Nuclear Power Engineering, 2023, 44(S2): 11-16. doi: 10.13832/j.jnpe.2023.S2.0011

Citation:

Yuan Pan, Wang Haoyu, Huang Shan, Liu Menglong, Yue Ti, Ren Quanyao, Qin Mian, Zheng Lele, Guo Zixuan. Research on Thermal-fluid-structure Coupling Behavior for U-10Mo/Al Fuel Assemblies under Irradiation[J]. Nuclear Power Engineering, 2023, 44(S2): 11-16. doi: 10.13832/j.jnpe.2023.S2.0011

Citation:

Yuan Pan, Wang Haoyu, Huang Shan, Liu Menglong, Yue Ti, Ren Quanyao, Qin Mian, Zheng Lele, Guo Zixuan. Research on Thermal-fluid-structure Coupling Behavior for U-10Mo/Al Fuel Assemblies under Irradiation[J]. Nuclear Power Engineering, 2023, 44(S2): 11-16. doi: 10.13832/j.jnpe.2023.S2.0011

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Research on Thermal-fluid-structure Coupling Behavior for U-10Mo/Al Fuel Assemblies under Irradiation

doi: 10.13832/j.jnpe.2023.S2.0011

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2023-07-11
Rev Recd Date: 2023-07-22
Publish Date: 2023-12-30

Abstract

Abstract

In order to investigate the effects of in-pile mechanical deformation under irradiation on the mechanical and thermal-hydraulic characteristics of U-10Mo/Al fuel assemblies, the mechanical behavior and thermal-hydraulic behavior of U-10Mo/AI fuel assemblies under in-pile irradiation are studied by using the thermal-fluid-structure coupling analysis method under irradiation. By introducing non-uniform irradiation conditions into the irradiation-thermal-mechanical coupling behavior of the 3D finite element model for fuel assemblies, the distribution and evolution laws of structural mechanics field and temperature field of U-10Mo/Al fuel assemblies under time-dependent and location-dependent irradiation conditions are studied. The results show that under the coupling effect of flow field, temperature field, and mechanical mechanics, U-10Mo/AI fuel assemblies exhibit typical mechanical deformation behavior, and both support plates and fuel elements have a certain degree of bending; the temperature field of fuel assemblies show a typical feature of non-uniform spatial distribution, and the peak temperature occurs at the position of maximum swelling of the fuel element; the stress at the sides and corners of the pellet for cladding and the pellet is larger than that in the central region and support plates.
- Fuel assembly,
- Irradiation effect,
- Thermal-fluid-structure coupling,
- Mechanical deformation,
- Thermal hydraulics

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References(12)

References

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