Cryogenic Liquid Slug and Taylor Bubble Length Distributions in an Inclined Tube

试验性的研究被执行由使用一个高速度运动分析器与关上的底部在一个使倾向的试管理解液体氮的沸腾的流动的现象。试验性的试管是 0.018 中间并且在长度的 1.0 m。倾斜角度的范围是 45 &#xb0； &#x2013； 90 &#xb0；从水平。实验集中于吝啬的液体蛞蝓长度和泰勒水泡长度在各种各样的倾斜角度与增加的 x/D 增加的倾斜角度表演的效果。在一样的 x/D，吝啬的液体蛞蝓长度和泰勒水泡长度增加第一，然后与减少的倾斜角度减少，与在 60 &#xb0 的最大值；。在垂直试管，有增加的 x/D 的氮泰勒水泡长度增加的标准差。为使倾向的试管，氮泰勒水泡长度的标准差增加第一，然后与增加的 x/D 减少。液体蛞蝓长度的标准差与为所有倾斜角度增加 x/D 增加。

An experimental study was carried out to understand the phenomena of the boiling flow of liquid nitrogen in an inclined tube with closed bottom by using a high speed motion analyzer. The experimental tube is 0.018 m ID and 1.0m in length. The range of the inclination angle is 45°-9° from the horizontal. The experiment focused on the effect of the inclination angle show that the mean liquid slug length and Taylor bubble length increase with the increasing xlD at various inclination angles. At the same x/D, the mean liquid slug length and Taylor bubble length increase first, and then decrease with decreasing inclination angles, with the maximum at 60°. In the vertical tube, standard deviation of the nitrogen Taylor bubble iength increase with the increasing xlD. For the inclined tube, standard deviation of the nitrogen Taylor bubble length increases first, and then decreases with the increasing x/D. Standard deviation of the liquid slug length increases with increasing x/D for all inclination angles.