Drag-induced breakup mechanism for droplet generation in dripping within flow focusing microfluidics

Ping Wu; Zhaofeng Luo; Zhifeng Liu; Zida Li; Chi Chen; Lili Feng; Liqun He

doi:10.1016/j.cjche.2014.09.043

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Drag-induced breakup mechanism for droplet generation in dripping within flow focusing microfluidics

流体力学与传递现象 | Updated：2026-01-06

- Drag-induced breakup mechanism for droplet generation in dripping within flow focusing microfluidics
- Chinese Journal of Chemical Engineering Vol. 23, Issue 1, Pages: 7-14(2015)
- Affiliations：
  
  1. 2 School of Life Sciences, University of Science and Technology of China,Hefei,China,230027
  2. 3 Department of Mechanical Engineering, Hong Kong University of Science and Technology,Hong Kong,China
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2014.09.043
  CLC：
- Published：2015
- Accepted：
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Ping Wu, Zhaofeng Luo, Zhifeng Liu, Zida Li, Chi Chen, Lili Feng, Liqun He. Drag-induced breakup mechanism for droplet generation in dripping within flow focusing microfluidics[J]. Chin.J.Chem.Eng., 2015, 23(1): 7-14.
DOI：

Ping Wu, Zhaofeng Luo, Zhifeng Liu, Zida Li, Chi Chen, Lili Feng, Liqun He. Drag-induced breakup mechanism for droplet generation in dripping within flow focusing microfluidics[J]. Chin.J.Chem.Eng., 2015, 23(1): 7-14. DOI： 10.1016/j.cjche.2014.09.043.

摘要

Abstract

Based on viscous drag-induced breakup mechanism

a simple model was proposed to predict the dripping droplet size as a function of controllable parameters in flow focusing micro devices. The size of thread before breakup was also investigated through laminar flow theory. Experiments and numerical simulations by VOF are carried out simultaneously to validate the theoretical analysis

showing that droplet size decreases rapidly with the increase of the flow rate ratio and capillary number.

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