Bubble forming dynamics of highly viscous fluids in microfluidic flow-focusing cross channel device

ZHANG Chong; FU Taotao; JIANG Shaokun; ZHU Chunying; MA Youguang

doi:10.11949/j.issn.0438-1157.20170968

您当前的位置：

首页 >

文章列表页 >

Bubble forming dynamics of highly viscous fluids in microfluidic flow-focusing cross channel device

更新时间：2025-12-10

- Bubble forming dynamics of highly viscous fluids in microfluidic flow-focusing cross channel device
- CIESC Journal Issue 2, Pages: 650-654(2018)
- 作者机构：
  
  1. 化学工程联合国家重点实验室, 天津大学化工学院,天津,300072
  2. 中国船舶重工集团公司第七一八研究所,河北,邯郸,056027
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170968
  CLC： Q021.4
- Online First：05 February 2018，
  
  Published：05 February 2018
- 稿件说明：
移动端阅览
ZHANG Chong, FU Taotao, JIANG Shaokun, et al. Bubble forming dynamics of highly viscous fluids in microfluidic flow-focusing cross channel device[J]. CIESC Journal, 2018, (2): 650-654.
DOI：

ZHANG Chong, FU Taotao, JIANG Shaokun, et al. Bubble forming dynamics of highly viscous fluids in microfluidic flow-focusing cross channel device[J]. CIESC Journal, 2018, (2): 650-654. DOI： 10.11949/j.issn.0438-1157.20170968.

摘要

利用高速摄像仪观察了聚焦十字型微通道内高黏度（630 mPa·s）的甘油-水溶液中氮气气泡的生成过程。研究了气泡生成过程以及气泡体积和最小颈部半径的变化规律。结果表明，高黏流体内气泡生成过程可分为回缩、膨胀、挤压和最终破裂4个阶段。气泡体积在膨胀和挤压阶段均随时间线性增长，但挤压阶段的斜率大于膨胀阶段的斜率。气泡最小颈部半径随时间变化分为两个不同的阶段：在挤压阶段，颈部半径随剩余时间呈幂率关系；而在最终破裂阶段，颈部半径随时间呈线性关系。

Abstract

N2 bubble formation in highly viscous (630 mPa·s) glycerol-water solution in a microfluidic flow-focusing cross channel device was observed by using a high-speed camera. Bubble forming process

size

and minimal neck radius were studied. The results show that the bubble formation process can be divided into stages of retraction

expansion

collapse

and final breakup. The bubble size was increased linearly with time in both expansion and collapse stages

which the slope in the collapse stage was greater than that in the expansion stage. The decrease of minimal neck radius of bubbles against time was different in two stages

i.e.

a power-law to remaining time in the collapse stage and a linearity with time in the final breakup stage.

关键词

Keywords

references

Views

222

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Characteristics of two-phase flow resistance and bubble behavior in microchannels

Dynamics of droplet breakup with permanent tunnel in asymmetric microfluidic T-junction

Review of research on liquid cooling technology for data centers

Synergistic mechanism in open microchannel and jet impingement hybrid cooling system

Generation and evolution of bubbles in channels of bipolar plates of alkaline water electrolyzers for producing hydrogen

Related Author

YAN Rungang

PAN Liangming

HE Hui

HUANG Haojie

LI Pengfei

MA Pengcheng

YANG Lei

YANG Hui

Related Institution

School of Power Engineering, Chongqing University

Factory 7304, China Aerospace Science and Technology Corporation

Luohe Cigarette Factory of China Tobacco Henan Industrial Co., Ltd.

School of Environmental and Energy Engineering, Beijing University of Civil Engineering and Architecture

Digital Infrastructure Institute, Shanghai Posts Telecommunications Design Consulting Institute Company Limited

⁰