Three Dimensionnal Simulation Investigation of Wedged Pellet-Clad Interaction Problem in Fuel Rod

Ma Zhengqing; Pang Hua; Zhang Kun; Tang Changbing; Wu Zhouzhi; Yan Feng; Xing Shuo

doi:10.13832/j.jnpe.2023.S2.0006

Volume 44 Issue S2

Dec. 2023

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Ma Zhengqing, Pang Hua, Zhang Kun, Tang Changbing, Wu Zhouzhi, Yan Feng, Xing Shuo. Three Dimensionnal Simulation Investigation of Wedged Pellet-Clad Interaction Problem in Fuel Rod[J]. Nuclear Power Engineering, 2023, 44(S2): 6-10. doi: 10.13832/j.jnpe.2023.S2.0006

Citation:

Ma Zhengqing, Pang Hua, Zhang Kun, Tang Changbing, Wu Zhouzhi, Yan Feng, Xing Shuo. Three Dimensionnal Simulation Investigation of Wedged Pellet-Clad Interaction Problem in Fuel Rod[J]. Nuclear Power Engineering, 2023, 44(S2): 6-10. doi: 10.13832/j.jnpe.2023.S2.0006

Citation:

Ma Zhengqing, Pang Hua, Zhang Kun, Tang Changbing, Wu Zhouzhi, Yan Feng, Xing Shuo. Three Dimensionnal Simulation Investigation of Wedged Pellet-Clad Interaction Problem in Fuel Rod[J]. Nuclear Power Engineering, 2023, 44(S2): 6-10. doi: 10.13832/j.jnpe.2023.S2.0006

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Three Dimensionnal Simulation Investigation of Wedged Pellet-Clad Interaction Problem in Fuel Rod

doi: 10.13832/j.jnpe.2023.S2.0006

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

Received Date: 2023-07-10
Rev Recd Date: 2023-08-03
Publish Date: 2023-12-30

Abstract

Abstract

The pellet-clad interaction (PCI) is one of the reasons leading to breach of cladding. The fracture generated by pellet cracking could wedge into the gap between pellet and caldding, resulting the wedged PCI problem. This problem may cause the local stress of the cladding to exceed the limit value and increase the risk of cladding damage. In order to evaluate the influence of wedged PCI on the performance of fuel rods, a three-dimensional finite element fuel element performance analysis method was established based on MOOSE, a multi-physical coupling finite element platform. In this method, the radiation effect and thermal-mechanical coupling effect are considered comprehensively, and the numerical simulation of wedged PCI problem is completed for the single pellet model. The results show that the wedged PCI problem can change the temperature distribution, stress distribution and strain distribution of the cladding, increase the maximum Mises stress and equivalent creep strain of the cladding, and increase the risk of fuel rod failure.
- Fuel rod,
- PCI,
- Wedge,
- MOOSE

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References(9)

References

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