2016年12月
Surface tension effects on vertical upward annular flows in a small diameter pipe
NUCLEAR ENGINEERING AND DESIGN
- ,
- ,
- 巻
- 310
- 号
- 開始ページ
- 612
- 終了ページ
- 619
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.nucengdes.2016.10.039
- 出版者・発行元
- ELSEVIER SCIENCE SA
Experiments were conducted to study the surface tension effects on vertical upward annular flows in a 5 mm I.D. pipe using water and low surface tension water with a little surfactant as the test liquid and air as the test gas. Firstly, the experimental results on the mean liquid film thickness, the liquid droplet fraction and the interfacial shear stress in annular flows together with some flow pictures are presented to clarify the surface tension effects. From these, the followings are clarified: In the low surface tension case, the liquid film surface becomes rough, the liquid film thickness thin, the liquid droplet fraction high, and the interfacial shear stress high. Secondary, correlations in literatures for the respective parameters are tested against the present data. The test results show that no correlation for the respective parameters could predict well the present data. Thus, correlations are revised by accounting for the surface tension effects. The results of the experiments, the correlations tests and their revisions mentioned above are presented in the present paper. (C) 2016 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.nucengdes.2016.10.039
- ISSN : 0029-5493
- eISSN : 1872-759X
- Web of Science ID : WOS:000390736400053