2017年10月
A numerical simulation method for molten material behavior in nuclear reactors
NUCLEAR ENGINEERING AND DESIGN
- ,
- ,
- ,
- 巻
- 322
- 号
- 開始ページ
- 301
- 終了ページ
- 312
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.nucengdes.2017.06.032
- 出版者・発行元
- ELSEVIER SCIENCE SA
In recent years, significant attention has been paid to the precise determination of relocation of molten materials in reactor pressure vessels of boiling water reactors (BWRs) during severe accidents. To address this problem, we have developed a computational fluid dynamics code JUPITER, based on thermal-hydraulic equations and multi-phase simulation models. Although the Poisson solver has previously been a performance bottleneck in the JUPITER code, this is resolved by a new hybrid parallel Poisson solver, whose strong scaling is extended up to similar to 200 k cores on the K-computer. As a result of the improved computational capability, the problem size and physical models are dramatically expanded. A series of verification and validation studies are enabled, which are in agreement with previous numerical simulations and experiments. These physical and computational capabilities of JUPITER enable us to investigate molten material behaviors in reactor relevant situations. (C) 2017 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.nucengdes.2017.06.032
- ISSN : 0029-5493
- eISSN : 1872-759X
- Web of Science ID : WOS:000411468800026