ICONE23-1950 NUMERICAL STUDY ON INFLUENCE OF OHNESORGE NUMBER AND REYNOLDS NUMBER ON THE JET BREAKUP BEHAVIOR USING THE LATTICE BOLTZMANN METHOD
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- Iwasawa Yuzuru
- University of Tsukuba
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- Abe Yutaka
- University of Tsukuba
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- Kaneko Akiko
- University of Tsukuba
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- Kanagawa Tetsuya
- University of Tsukuba
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- Saito Shimpei
- University of Tsukuba
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- Matsuo Eiji
- Mitsubishi FBR Systems, Inc.
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- Ebihara Ken-ichi
- Japan Atomic Energy Agency
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- Sakaba Hiroshi
- Mitsubishi Heavy Industries, Ltd.
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- Koyama Kazuya
- Mitsubishi FBR Systems, Inc.
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- Nariai Hideki
- University of Tsukuba
Abstract
In a core disruptive accident of a sodium-cooled fast reactor, the considerable amount of fuel in the core region may melt, and be discharged into the coolant like a jet. Hence, it is necessary to understand the jet breakup behavior from the viewpoint of the post-accident heat removal. In order to clarify the mechanism of jet breakup caused by the hydrodynamic interaction, we simulated the injection of a jet into a coolant using the lattice Boltzmann method for two-phase fluid which can represent the spontaneous interfacial behavior. In the simulation, we changed the Reynolds number of the jet and the viscosity ratio between the jet and the coolant, and observed their influence to the interfacial behavior. By observing the interfacial behavior, we found that the wave formation and fragmentation at the side of the jet were suppressed when the Reynolds number becomes small, and cognized the importance of considering the influence of the viscosity of a coolant to the jet behavior.
Journal
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- The Proceedings of the International Conference on Nuclear Engineering (ICONE)
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The Proceedings of the International Conference on Nuclear Engineering (ICONE) 2015.23 (0), _ICONE23-1-_ICONE23-1, 2015
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390282680856366976
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- NII Article ID
- 110010046527
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- ISSN
- 24242934
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed