Numerical Simulation of Gas-Liquid Two-Phase Flow in a T-Junction Micro-Channel

您当前的位置：

首页 >

文章列表页 >

Numerical Simulation of Gas-Liquid Two-Phase Flow in a T-Junction Micro-Channel

更新时间：2025-07-09

- Numerical Simulation of Gas-Liquid Two-Phase Flow in a T-Junction Micro-Channel
- Vol. 45, Issue 9, Pages: 65-69(2011)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TQ021.1
- Online First：10 September 2011，
  
  Published：2011
- 稿件说明：
移动端阅览
Numerical Simulation of Gas-Liquid Two-Phase Flow in a T-Junction Micro-Channel[J]. 2011, 45(9): 65-69.
DOI：

Numerical Simulation of Gas-Liquid Two-Phase Flow in a T-Junction Micro-Channel[J]. 2011, 45(9): 65-69. DOI：

摘要

采用相场方法

在湿壁面条件下对T型微通道内不可压缩气液两相流动进行了模拟研究.数值模拟中得到微通道内特有气泡——Taylor气泡形成的过程

发现其形成共经历了4个阶段

气泡在形成过程中主要受到挤压力、表面张力、黏性力的作用

分析各阶段这3种力对气泡的作用

得到Taylor气泡形成机理.计算结果表明

挤压力和表面张力在气泡整个形成过程都起作用

表面张力在气泡脱离前达到最小值

黏性力仅在气泡形成前两阶段起作用并在阻塞阶段取得最大值.这些基本规律为有效控制微通道内气泡尺寸和微通道系统设计提供了一定的依据.

Abstract

The numerical simulation was performed to investigate the incompressible gas-liquid two-phase flow in a T-junction micro-channel with wetted walls using a phase field method. The formation process including four stages of a well defined Taylor bubble was achieved. The Taylor bubble is exerted by three forces in formation process

i.e.

extrusion force

surface tension force and shear stress force of the continuous phase

and the formation mechanism of the Taylor bubble was obtained. The numerical results show that both the extrusion force and the surface tension force act in the formation process of the Taylor bubble

and the surface tension force reaches a minimum value before detachment. The shear stress force acts only in the preceding two stages of the formation process

and it has a maximum value in the blocking stage

关键词

Keywords

references

GALBIATI L, ANDREINI P. Flow pattern transition for horizontal air-water flow in capillary tubes: a microgravity equivalent system simulation[J]. International Communications in Heat and Mass Transfer,1994,21(4): 461-468.

TICE D, SONG H, LYON D,et al. Formation of droplets and mixing in multiphase microfluidics at low values of the Reynolds and the capillary numbers[J]. Langmuir, 2003, 19(22): 9127-9133.

GUNTHER A,KHANS A,THALMANN M, et al. Transport and reaction in microscale segmented gas-liquid flow[J]. Lab Chip, 2004, 4(4):278-286.

ZHENG B,TICE D,ISMAGILOV F.A microfluidic system for screening protein crystallization conditions inside nanoliter droplets with on-chip X-ray diffraction[J]. Micro Total Analysis Systems, 2005, 2(297):145-147.

SRINIVASAN V, PAMULA K, FAIR B. An integrated digital microfluidic lab-on-a-chip for clinical diagnostics on human physiological fluids[J].Lab Chip, 2004, 4(4):310-315.

BURNS A, JOHNSON N, BRAHMASANDRA N, et al. An integrated nanoliter DNA analysis device[J].Science, 1998, 282(5388): 484-487.

王昆,王嘉骏,顾雪萍,等.微通道内Taylor流的计算流体力学数值模拟研究进展[J].化工进展, 2010,29(10):1806-1810.

WANG Kun, WANG Jiajun, GU Xueping, et al.Progress in modeling of Taylor flow within microchannels by computational fluid dynamics[J]. Chemical Industry and Engineering Progress, 2010,29(10):1806-1810.

LIU H, ZHANG Y.Droplet formation in a T-shaped microfluidic junction[J]. Journal of Applied Physics, 2009, 106(3):1-6.

JACQMIN D.Calculation of two-phase Navier-Stokes flows using phase-field modeling[J]. Journal of Computational Physics,1999,155(1):96-127.

DAI L, CAI W, XIN F.Numerical study on bubble formation of a gas-liquid flow in a T-junction microchannel[J]. Chemical Engineering and Technology,2009,32(12): 1984-1991.

GARSTECKI P, FUERSTMAN J, STONE A, et al. Formation of droplets and bubbles in a microfluidic T-junction: scaling and mechanism of break-up[J].Lab on a Chip,2006, 6(3):437-446.

KASHID N, RENKEN A, KIWI-MINSKER L.CFD modelling of liquid-liquid multiphase microstructured reactor: slug flow generation[J].Chemical Engineering Research and Design,2010, 88(3):362-368.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Heat Transfer Enhancement in Micro-channel with Dimples and Protrusions

Numerical Investigation on the Evolution Characteristics of Two-Phase Interface in Ferrofluids

Study of the Mechanism of Electrostatic Accumulation and Current Density Distribution Characteristics During Liquid Hydrogen Pipeline Transportation

Numerical Simulation of Space Charge Distribution Characteristics of Polyimide Materials under X-Ray Irradiation

Numerical Simulation Study on Geothermal Extraction Characteristics of Supercritical CO2 in Heterogeneous Fractures

Related Author

蓝吉兵

谢永慧

张荻

施东晓

毕勤成

周荣启

SUN Wenhao

LIU Hongbao

Related Institution

State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University

School of Energy and Power Engineering，Xi’an Jiaotong University

Aerospace System Engineering Shanghai

School of Electrical Engineering，Xi’an Jiaotong University

Northwest Institute of Nuclear Technology

⁰