Spontaneous uptake of droplets into non-wetting capillaries

Spontaneous uptake of droplets into non-wetting capillaries
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液滴自发吸收到非润湿毛细管中

DOI:
10.1016/j.compfluid.2016.05.017
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发表时间:
2016-08
期刊:
影响因子:
2.8
通讯作者:
Liu Yang
Liu Yang
中科院分区:
工程技术3区
文献类型:
--
作者:
Wang Yuxiang;Chen Shuo;Liu Yang

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在本研究中,通过使用多体耗散粒子动力学来模拟液滴自发吸收到非湿润毛细血管中。模拟结果表明,即使在非润湿毛细管中,液滴也会发生自发吸收。与毛细管中液体自发运动的方向取决于润湿性的储液器中的液体相反,毛细管中液滴的运动方向不仅取决于表面润湿性,而且还取决于液滴的半径。我们从力平衡的观点给出了解释。我们的研究结果表明,毛细管力可以用来驱动微流体中的液体。
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.
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