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タイトル: The Influence of the Heating Condition on the Void Fraction in a Boiling Channel
著者: Umekawa, H.
Nakamura, S.
Fujiyoshi, S.
Ami, T.
Ozawa, M.
Saito, Y.
Ito, D.
著者名の別形: 伊藤, 大介
キーワード: Void fraction
Two-phase flow
Net vapor generation
Convective flow boiling
Neutron radiography
発行日: 2015
出版者: Elsevier B.V.
誌名: Physics Procedia
巻: 69
開始ページ: 599
終了ページ: 606
抄録: The void fraction profile in a boiling channel is essential in analyzing convective flow boiling, where several investigations have been conducted. But due to the difficulty in the treatment of the non-thermodynamic equilibrium phenomena under subcooled conditions, the issues in comprehensive void fraction profile has not been solved, yet. To improve the understanding of these phenomena, detailed measurement results are required. In this investigation, by using five kinds of test sections, i.e. I.D.=3 mm L=400 mm, I.D.=5 mm L=200, 400, 1000 mm, and I.D.=10 mm L=400 mm, the void fraction was measured quantitatively over the whole length. For the measurements, thermal neutron radiography at the B-4 port of the Kyoto University Research Reactor was used. This facility is designed for the visualization of forced convective flow boiling in vertical tubes. To introduce the performance of this facility, this paper presents the measurement results of void fraction and the estimation results briefly.
記述: Proceedings of the 10th World Conference on Neutron Radiography (WCNR-10) Grindelwald, Switzerland October 5–10, 2014
著作権等: © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license(http://creativecommons.org/licenses/by-nc-nd/4.0/).
URI: http://hdl.handle.net/2433/215127
DOI(出版社版): 10.1016/j.phpro.2015.07.085
出現コレクション:学術雑誌掲載論文等

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