Fluctuation characteristics of heating surface temperature near the obstacle in transient boiling two-phase flow in a vertical annular channel

Shoji Mori, Tohru Fukano, Tetsuro Nakagawa

研究成果: ジャーナルへの寄稿学術誌査読

抄録

If a flow obstruction such as a spacer is set in a boiling two-phase flow within an annular channel, the inner tube of which is used as a heater, the temperature on the surface of the heater tube is severely affected by the existence of the spacer. In some cases the spacer has a cooling effect, and in the other case it causes the dryout of the cooling liquid film on the heating surface resulting in the burnout of the tube. But the thermo-fluid dynamics mechanism to cause burnout near the spacer is not still clear. In the present paper we discuss temperature fluctuation characteristics in relation to the change of the flow configuration near the spacer in transient boiling two-phase flow. The transient parameters are the heat flux, the mass flow rate, and the inlet quality.

本文言語英語
ページ(範囲)2281-2287
ページ数7
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
67
661
DOI
出版ステータス出版済み - 9月 2001
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 機械工学

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