Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran.
Brewing and beverage technology, TUM School of Life Sciences, Technical University of Munich, Freising, Germany.
Sci Rep. 2022 Feb 25;12(1):3226. doi: 10.1038/s41598-022-07130-6.
In the current study, droplets dynamics under an asymmetric electric field in a T-junction are numerically studied using COMSOL Multi-physics software. The effect of different factors such as dimensionless length of mother droplet (L), Capillary number (Ca), and electric capillary number (Ca) are investigated on the breakup process in symmetric T-junctions. Two novel patterns of droplets, namely, hybrid asymmetric splitting mode and sorting patterns, have been observed by imposing an electric field in one branch of the microchannel. It is also concluded that using an electric field is a promising strategy to reach droplets with arbitrary sizes and control over the splitting ratio of daughter droplets precisely in a T- junction by adjusting the electric field strength. After a certain electric capillary number ([Formula: see text]), the mother droplet does not breakup and is sorted on the side of the branch that the electric field imposes. Furthermore, [Formula: see text] increases with the increment of L and Ca.
在本研究中，使用 COMSOL Multiphysics 软件对 T 型分叉处非对称电场下的液滴动力学进行了数值研究。考察了不同因素对对称 T 型分叉处 breakup 过程的影响，如母液滴的无量纲长度（L）、毛细数（Ca）和电动毛细数（Ca）。通过在微通道的一个分支施加电场，观察到两种新的液滴模式，即混合不对称分裂模式和分类模式。结论表明，通过调整电场强度，可以使用电场作为一种有前途的策略，在 T 型分叉处获得任意大小的液滴，并精确控制 daughter 液滴的分裂比。在一定的电动毛细数（[Formula: see text]）后，母液滴不会发生 breakup，并在电场施加的分支侧进行分类。此外，[Formula: see text]随着 L 和 Ca 的增加而增加。
