Experimental Study on the Initial Position Distribution of Taylor Bubbles in Cryogenic Upward Inclined Tubes

›› 2009, Vol. 17 ›› Issue (2): 340-343.

Experimental Study on the Initial Position Distribution of Taylor Bubbles in Cryogenic Upward Inclined Tubes

张华, 王淑华, 刘夷平, 王经

Institute of Engineering Thermo-physics, Shanghai Jiao Tong University, Shanghai 200240, China

收稿日期:2008-08-27 修回日期:2008-12-14 出版日期:2009-04-28 发布日期:2009-04-28
通讯作者: ZHANG Hua,E-mail:crazywawa@sjtu.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (50476015);National High-Tech Research and Development Program of China (2006AA09Z333)

Experimental Study on the Initial Position Distribution of Taylor Bubbles in Cryogenic Upward Inclined Tubes

ZHANG Hua, WANG Shuhua, LIU Yiping, WANG Jing

Institute of Engineering Thermo-physics, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2008-08-27 Revised:2008-12-14 Online:2009-04-28 Published:2009-04-28
Supported by:
Supported by the National Natural Science Foundation of China (50476015);National High-Tech Research and Development Program of China (2006AA09Z333)

摘要/Abstract

摘要： An experimental study was carried out to understand the phenomena of the boiling flow of liquid nitrogen in inclined tubes with closed bottom by using the high speed digital camera.The tubes in the experiment are 0.018 m and 0.014 m in inner diameter and 1.0 m in length.The range of the inclination angles is 0-45° from the vertical.The statistical method is employed to analyze the experimental data.The experiment was focused on the effect of the inclination angle on the initial position distribution of Taylor bubbles.The formation criterion of Taylor bubbles was confirmed by analyzing the images of Taylor bubbles.The experimental results show that the initial position of Taylor bubble increased first,and then decreased with the increasing inclination angle,with the maximum at 30°.The standard deviation of the initial position of Taylor bubble in tubes was different with different inner diameters.The lognormal shape was fitted to the measured the initial position distributions of Taylor bubbles in the cryogenic tubes.

关键词: cryogenic, nitrogen, boiling, initial position distribution, Taylor bubble, inclined tube

Abstract: An experimental study was carried out to understand the phenomena of the boiling flow of liquid nitrogen in inclined tubes with closed bottom by using the high speed digital camera.The tubes in the experiment are 0.018 m and 0.014 m in inner diameter and 1.0 m in length.The range of the inclination angles is 0-45° from the vertical.The statistical method is employed to analyze the experimental data.The experiment was focused on the effect of the inclination angle on the initial position distribution of Taylor bubbles.The formation criterion of Taylor bubbles was confirmed by analyzing the images of Taylor bubbles.The experimental results show that the initial position of Taylor bubble increased first,and then decreased with the increasing inclination angle,with the maximum at 30°.The standard deviation of the initial position of Taylor bubble in tubes was different with different inner diameters.The lognormal shape was fitted to the measured the initial position distributions of Taylor bubbles in the cryogenic tubes.

Key words: cryogenic, nitrogen, boiling, initial position distribution, Taylor bubble, inclined tube

张华, 王淑华, 刘夷平, 王经. Experimental Study on the Initial Position Distribution of Taylor Bubbles in Cryogenic Upward Inclined Tubes[J]. , 2009, 17(2): 340-343.

ZHANG Hua, WANG Shuhua, LIU Yiping, WANG Jing. Experimental Study on the Initial Position Distribution of Taylor Bubbles in Cryogenic Upward Inclined Tubes[J]. , 2009, 17(2): 340-343.

参考文献

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Experimental Study on the Initial Position Distribution of Taylor Bubbles in Cryogenic Upward Inclined Tubes

Experimental Study on the Initial Position Distribution of Taylor Bubbles in Cryogenic Upward Inclined Tubes

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