Self-leveling behavior of mixed solid particles in cylindrical bed using gas-injection method

Le Hoang Sang Phan, Phi Manh Ngo, Ryo Miura, Yusuke Tasaki, Tatsuya Matsumoto, Wei Liu, Koji Morita

研究成果: ジャーナルへの寄稿記事

抄録

The self-leveling of debris beds is a critical phenomenon to be clarified in the safety assessment of material relocation and decay heat-removal phases in postulated core-disruptive accidents in sodium-cooled fast reactors. In recent years, we have conducted several series of experiments using simulant materials to develop an experimental database of self-leveling processes in particle beds and proposed an empirical model to predict the bed height during self-leveling. The obtained experimental knowledge and proposed model applicability have been limited to homogeneous particles, although fragmented core debris could be mainly mixtures of fuel and stainless-steel particles with a size distribution. We conducted self-leveling experiments using mixtures of solid particles with different properties to understand the characteristics of self-leveling phenomena under a wider range of conditions. An improved empirical model for transient bed height was developed to correlate the experimental data under various conditions of particle mixtures. The developed model reproduces the self-leveling development of mixed particle beds and those of the homogeneous particle reasonably.

元の言語英語
ページ(範囲)111-122
ページ数12
ジャーナルjournal of nuclear science and technology
56
発行部数1
DOI
出版物ステータス出版済み - 1 2 2019

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gas injection
leveling
beds
Debris
Core disruptive accidents
Relocation
Fast reactors
debris
Stainless steel
Experiments
Sodium
relocation
accidents
stainless steels
safety
reactors
sodium
heat
decay

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering

これを引用

Self-leveling behavior of mixed solid particles in cylindrical bed using gas-injection method. / Phan, Le Hoang Sang; Ngo, Phi Manh; Miura, Ryo; Tasaki, Yusuke; Matsumoto, Tatsuya; Liu, Wei; Morita, Koji.

:: journal of nuclear science and technology, 巻 56, 番号 1, 02.01.2019, p. 111-122.

研究成果: ジャーナルへの寄稿記事

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AU - Liu, Wei

AU - Morita, Koji

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