Numerical Simulation of Melting Behavior of 2×2 Rod Bundle Structure Based on MPS Algorithm

He Mengxuan; Fu Shengwei; Yu Hang

doi:10.13832/j.jnpe.2022.05.0147

Volume 43 Issue 5

Oct. 2022

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He Mengxuan, Fu Shengwei, Yu Hang. Numerical Simulation of Melting Behavior of 2×2 Rod Bundle Structure Based on MPS Algorithm[J]. Nuclear Power Engineering, 2022, 43(5): 147-153. doi: 10.13832/j.jnpe.2022.05.0147

Citation:

He Mengxuan, Fu Shengwei, Yu Hang. Numerical Simulation of Melting Behavior of 2×2 Rod Bundle Structure Based on MPS Algorithm[J]. Nuclear Power Engineering, 2022, 43(5): 147-153. doi: 10.13832/j.jnpe.2022.05.0147

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Numerical Simulation of Melting Behavior of 2×2 Rod Bundle Structure Based on MPS Algorithm

doi: 10.13832/j.jnpe.2022.05.0147

College of Nuclear Science and Technology, Naval University of Engineering, Wuhan, 430033, China

Received Date: 2021-08-31
Rev Recd Date: 2021-11-03
Publish Date: 2022-10-12

Abstract

Abstract

Taking the 2 × 2 rod bundle structure of typical pressurized water reactor fuel assembly as the research object, the three-dimensional model of rod bundle with and without positioning grid is established. Based on the semi-implicit moving particle algorithm (MPS), the melting behavior of the rod bundle structure under the background of serious accidents is numerically simulated, and the influence of the positioning grid on the flow channel blocking process in the rod bundle melting process is analyzed. The results show that the MPS algorithm can better simulate the melting behavior of the rod bundle structure, and the positioning grid will speed up the melting process of the core and the blocking speed of the cooling channel. The research results in this paper are beneficial to the optimization and improvement of the core melting model under severe accident.
- Positioning grid,
- MPS,
- Serious accident

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References(13)

References

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