2021 Fiscal Year Final Research Report
A Multi-physics Compressible-Incompressible Computational Framework for Mechanistic Simulation of Steam Explosion in Fuel-Coolant Interaction
| Project/Area Number |
19K15478
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 31010:Nuclear engineering-related
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| Research Institution | The University of Tokyo |
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Principal Investigator |
DUAN Guangtao 東京大学, 大学院工学系研究科(工学部), 特任助教 (40804852)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | Particle method / MPS method / SPH method / Vaporization / Solidification / Multiphase flow |
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| Outline of Final Research Achievements |
A novel vaporization model was proposed for particle methods. A new advanced particle method was developed to simulate the key multi-physical phenomena in fuel-coolant interaction.
Sensitivity analysis demonstrated that initial temperature had the most significant influence on melt fragmentation.
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| Free Research Field |
Nuclear Engineering
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| Academic Significance and Societal Importance of the Research Achievements |
The proposed models can significantly improve the theory of particle methods and greatly expand the application range of numerical methods.
The proposed method can help to deepen the understanding of the severe accident progression in nuclear power plants.
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