INVESTIGATION ON EX-VESSEL CORIUM SPREADING PROCESS WITH INCOMPRESSIBLE SMOOTHED PARTICLE HYDRODYNAMICS METHOD
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- Lan Yicong
- Department of Nuclear Science and Technology Xi’an Jiaotong University
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- Zhang Yapei
- Department of Nuclear Science and Technology Xi’an Jiaotong University
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- Tian Wenxi
- Department of Nuclear Science and Technology Xi’an Jiaotong University
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- Su G.H.
- Department of Nuclear Science and Technology Xi’an Jiaotong University
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- Qiu Suizheng
- Department of Nuclear Science and Technology Xi’an Jiaotong University
抄録
<p>In the severe accident of PWR nuclear power plants, one of the mitigation measures for core melting accidents is Ex-Vessel Retention (EVR) that the core catcher will hold the entire mass of corium coming from the reactor and the corium can be cooled during the spreading. The study of ex-vessel corium spreading is of great significance for the application of EVR. The present paper aims to investigate on ex-vessel corium spreading process with an enhanced implicit viscosity Incompressible Smoothed Particle Hydrodynamics (ISPH) method that is especially suitable for simulating the free-surface flow with solid-liquid phase change problem. The enthalpy-based heat transfer model is added in the corrector step. Implicit viscosity algorithm is used to eliminate the time step limitation of highly viscosity in the solidification interval. The numerical simulation of the KATS15 simulant materials spreading test was carried out to check the validity of the developed model. The results show that the developed method can accurately predict the 3D corium spreading process, and is of great engineering application value and scientific significance for determining the success criteria of the corium spreading and optimizing the design of the core catcher.</p>
収録刊行物
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- Proceedings of the ... International Conference on Nuclear Engineering. Book of abstracts : ICONE
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Proceedings of the ... International Conference on Nuclear Engineering. Book of abstracts : ICONE 2023.30 (0), 1216-, 2023
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390861228319807872
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- ISSN
- 24242934
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
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- 抄録ライセンスフラグ
- 使用不可