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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| Project Status |
Completed (Fiscal Year 2021)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Particle method / MPS method / SPH method / Vaporization / Solidification / Multiphase flow / Particle methods / Heat transfer / Fuel-coolant interaction / Vapor expansion / Solidfication |
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| Outline of Research at the Start |
The study couples the compressible and incompressible particle solvers to mechanistically model the simultaneous boiling and solidification phenomena, paving the way for directly simulating steam explosion in fuel-coolant interaction.
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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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| 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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Report
(4 results)
Research Products
(12 results)
