Liquid-liquid two-phase viscous flow in coaxial microfluidic device

LAN Wenjie; LI Shaowei; XU Jianhong; LUO Guangsheng

doi:10.3969/j.issn.0438-1157.2013.02.010

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Liquid-liquid two-phase viscous flow in coaxial microfluidic device

更新时间：2025-12-10

- Liquid-liquid two-phase viscous flow in coaxial microfluidic device
- CIESC Journal Issue 2, Pages: 476-483(2013)
- 作者机构：
  
  清华大学化学工程系,化学工程联合国家重点实验室,北京,100084
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.02.010
  CLC： Q051.1
- Online First：05 February 2013，
  
  Published：05 February 2013
- 稿件说明：
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LAN Wenjie, LI Shaowei, XU Jianhong, et al. Liquid-liquid two-phase viscous flow in coaxial microfluidic device[J]. CIESC Journal, 2013, (2): 476-483.
DOI：

LAN Wenjie, LI Shaowei, XU Jianhong, et al. Liquid-liquid two-phase viscous flow in coaxial microfluidic device[J]. CIESC Journal, 2013, (2): 476-483. DOI： 10.3969/j.issn.0438-1157.2013.02.010.

摘要

进行了同轴环管微流控设备内黏性聚合物溶液的流动行为研究。研究发现通过调节两相流体黏度与流量

可以得到滴流和射流两种稳定流型

并且可以进一步实现液滴尺寸的调控。同时

还分别针对不同流型建立了数学模型用于液滴尺寸预测。所得结果可以用做利用微流控技术制备聚合物微球的理论指导。

Abstract

The flow behavior of polymer solutions with relatively high viscosity in a coaxial micro-channel device was investigated.In the experiment

two kinds of flow patterns

dripping and jetting

could be formed.The jetting regime occurred as flow rate and viscosity of the fluids increased.The influence of two-phase viscosities and flow rates on drop size was investigated.The results could be used to guide the preparation of polymer micro-sized spheres.Mathematic models for predicting drop size in two flow patterns were established separately

and the calculated values fitted experimental results well.

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Related Institution

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University

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