Spontaneous uptake of droplets into non-wetting capillaries

被引：19
|
作者：
Wang, Yuxiang [1 ]
Chen, Shuo [1 ,2 ]
Liu, Yang [3 ]
机构：
[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China
[2] Tongji Univ, Shanghai Key Lab Vehicle Aerodynam & Vehicle Ther, Shanghai 201804, Peoples R China
[3] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China
来源：
COMPUTERS & FLUIDS | 2016年 / 134卷
基金：
中国国家自然科学基金;
关键词：
Droplet; Capillary; Surface tension; Many-body dissipative particle dynamics; DISSIPATIVE PARTICLE DYNAMICS; ABSORPTION; FLOW;
D O I：
10.1016/j.compfluid.2016.05.017
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
In the present study, the spontaneous uptake of droplets into non-wetting capillaries was simulated by using many-body dissipative particle dynamics. The simulated results show that the droplets undergo a spontaneous uptake even for a non-wetting capillary. In contrast to the liquid in a reservoir in which the direction of liquid spontaneous movement in the capillary depends on the wettability, the moving direction of droplets in the capillary relies not only on the surface wettability but also the radius of the droplets. We give an explanation from the viewpoint of force balance. Our results demonstrate that capillary force could be used to drive liquid in microfluidics. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：190 / 195
页数：6
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