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有限長の垂直円柱まわりの過渡膜沸騰熱伝達に関する研究 (第3報) : 新伝熱整理式


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タイトル: 有限長の垂直円柱まわりの過渡膜沸騰熱伝達に関する研究 (第3報) : 新伝熱整理式
その他のタイトル: Study on Transient Film Boiling Heat Transfer around a Vertical Finite-Length Cylinder (3rd Report : New Correlation of Heat Transfer)
著者: 山田, タカシ / 茂地, 徹 / 桃木, 悟 / 金丸, 邦康
著者(別表記) : Yamada, Takashi / Shigechi, Toru / Momoki, Satoru / Kanemaru, Kuniyasu
発行日: 1999年 7月
引用: 長崎大学工学部研究報告 Vol.29(53) p.181-186, 1999
抄録: The film boiling heat transfer from a vertically placed cylinder of finite-length was analyzed to predict the overall heat transfer rate around the cylinder in terms of boiling curve. The overall heat transfer rate around the cylinder was determined by taking into account every convective heat transfer on the bottom, side and top surfaces of the cylinder. The local heat transfer rate on the bottom surface was analyzed by the method similar to that developed by the authors for a downward-facing horizontal circular plate. For the vertical lateral surface of the cylinder, Bromley's model and the vapor-film-unit model presented by Nishio and Ohtake were introduced. Bromley's model is effective for the smooth interface, while the vapor-film-unit model is effective for the wavy interface. Bromley's model was modified to accommodate the continuity of the vapor flow rate at the lower end of the side wall, where the vapor film had a finite thickness due to the vapor inflow out of the bottom surface. Berenson's model was adopted on the top surface. The effects of length and diameter of the cylinder on the overall heat transfer rate were discussed in terms of boiling curve. The new prediction method was compared with the experimental data obtained by the authors.
URI: http://hdl.handle.net/10069/5071
ISSN: 02860902
資料タイプ: Departmental Bulletin Paper
出現コレクション:第29巻 第53号

引用URI : http://hdl.handle.net/10069/5071

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