Experimental investigation of liquid disintegration by rotary cups
Experimental investigation of liquid disintegration by rotary cups
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DOI：
10.1016/j.ces.2012.01.010
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发表时间：
2012-05
影响因子：
4.7
通讯作者：
Junxiang Liu;Q. Yu;Q. Guo
中科院分区：
文献类型：
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作者：
Junxiang Liu;Q. Yu;Q. Guo
对旋转杯对液体的分解进行了实验研究。利用高速照相机拍摄的照片，研究了旋转杯中直滴形成和韧带形成的机理。实验中使用了两种液体和三种杯子。研究发现，在一定流速下，随着角速度的增加，会出现三种不同类型的崩解形成。理论推导了直接液滴形成和韧带形成液滴直径的计算公式，实验结果得到的无因次方程适用于各种工况下液滴直径的计算。在韧带形成解体过程中，液滴的直径由韧带尾端直径决定，其直径是恒定的。将直接滴状到韧带状和韧带状到片状的过渡方程按三维参数排列，并与各种实验结果进行比较。过渡方程与实验数据所显示的趋势拟合得很好，适用于103<We<105的特定范围。
The disintegration of liquid by rotary cups has been investigated experimentally. The mechanism of direct drop formation and ligament formation in a rotary cup was studied using photos taken by a high-speed camera. Two kinds of liquids and three kinds of cups were used in the experiment. In the study, we found that three different types of disintegration formation occur as the angular speed increases in a given flow rate. The equations have been derived theoretically for calculating diameter of liquid drop produced by direct drop formation and ligament formation and the dimensionless equations obtained from the experimental results are applicable for calculating diameter of drops in a wide range of operating conditions. In the process of disintegration by ligament formation, the diameter of liquid drop is determined by the diameter of tail end of ligament, which was constant in diameter. The transition equations from direct drop formation to ligament formation and ligament formation to sheet formation arranged by three dimensionless parameters and compared with various experimental results. The transition equations fit quite well in the trend shown by the experimental date and they are applicable in a particular range of We, i.e. 103<We<105.