Numerical simulation of gas-liquid two-phase flow in hydrodynamically focused microchannels

LÜ Jianhua; LI Pin; GAO Mengfan; YIN Minghai

doi:10.11949/j.issn.0438-1157.20150893

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Numerical simulation of gas-liquid two-phase flow in hydrodynamically focused microchannels

更新时间：2025-12-10

- Numerical simulation of gas-liquid two-phase flow in hydrodynamically focused microchannels
- CIESC Journal Issue 9, Pages: 3398-3404(2015)
- 作者机构：
  
  河北工业大学化工学院,天津,300130
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150893
  CLC： Q021.1
- Online First：05 September 2015，
  
  Published：05 September 2015
- 稿件说明：
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LÜ Jianhua, LI Pin, GAO Mengfan, et al. Numerical simulation of gas-liquid two-phase flow in hydrodynamically focused microchannels[J]. CIESC Journal, 2015, (9): 3398-3404.
DOI：

LÜ Jianhua, LI Pin, GAO Mengfan, et al. Numerical simulation of gas-liquid two-phase flow in hydrodynamically focused microchannels[J]. CIESC Journal, 2015, (9): 3398-3404. DOI： 10.11949/j.issn.0438-1157.20150893.

摘要

采用计算流体力学方法

考察了水力学聚焦微通道中气、液两相的流动状态。气、液两相在微通道中呈膜状流动

成膜过程可划分为3个阶段

液相表面压力、黏性力和表面张力在该过程中不断变化。考察了两相入口压强对两相流量和膜厚的影响

模拟结果显示:保持两相压强比值不变

同时改变两相压强

影响不显著;改变两相压强比值

影响显著。

Abstract

The gas-liquid two-phase flow in the hydrodynamically focused microchannels was investigated via computational fluid dynamics (CFD) method. Film was formed in the micro-channels and the film formation process included three stages. Surface pressure

shear stress force and surface tension force were changed during the film formation process. The effects of two-phase pressure change on the two-phase flux and film thickness were investigated. The results of numerical simulation showed that the pressure changing had little influence with constant two-phase pressure ratio at 1

while changing the ratio showed the significant influence.

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