Breakup dynamics of low-density gas and liquid interface during Taylor bubble formation in a microchannel flow-focusing device

2020 ◽  
Vol 215 ◽  
pp. 115473 ◽  
Author(s):  
Xingchen Li ◽  
Yiyong Huang ◽  
Xiaoqian Chen ◽  
Zan Wu
Keyword(s):  
Bubble Formation ◽  
Liquid Interface ◽  
Low Density ◽  
Microchannel Flow ◽  
Flow Focusing ◽  
Taylor Bubble

Pinch-off mechanism for Taylor bubble formation in a microfluidic flow-focusing device

2013 ◽  
Vol 16 (6) ◽  
pp. 1047-1055 ◽  
Author(s):  
Yutao Lu ◽  
Taotao Fu ◽  
Chunying Zhu ◽  
Youguang Ma ◽  
Huai Z. Li
Keyword(s):  
Bubble Formation ◽  
Flow Focusing ◽  
Taylor Bubble ◽  
Microfluidic Flow

Passage of a Taylor Bubble through a Stratified Liquid–Liquid Interface

2019 ◽  
Vol 59 (9) ◽  
pp. 3757-3771 ◽  
Author(s):  
Rupak Kumar ◽  
Lokesh Rohilla ◽  
Arup Kumar Das
Keyword(s):  
Liquid Interface ◽  
Taylor Bubble ◽  
Stratified Liquid

Experimental investigation on the breakup dynamics for bubble formation in viscous liquids in a flow-focusing device

2016 ◽  
Vol 152 ◽  
pp. 516-527 ◽  
Author(s):  
Yutao Lu ◽  
Taotao Fu ◽  
Chunying Zhu ◽  
Youguang Ma ◽  
Huai Z. Li
Keyword(s):  
Experimental Investigation ◽  
Bubble Formation ◽  
Flow Focusing ◽  
Viscous Liquids

Numerical Study on Bubble Formation in a Microchannel Flow-Focusing Device Using the VOF Method

2011 ◽  
Author(s):  
Shobeir Aliasghar Zadeh ◽  
Rolf Radespiel
Keyword(s):  
Surface Tension ◽  
Disperse Phase ◽  
Flow Rate ◽  
Capillary Number ◽  
Bubble Formation ◽  
Continuous Phase ◽  
Glycerol Solution ◽  
Flow Focusing ◽  
Injection Angle ◽  
Bubble Length

The liquid-gas two-phase flow in a flow-focusing device are numerically investigated and the results are compared with experimental data. The geometries and the structured meshes were generated using the Gridgen software, while the computations were conducted with Fluent. N2 (disperse phase) and Water-Glycerol solution (continuous phase) at standard atmospheric conditions are considered as fluids. Based on dimensional analysis, the effects of various parameters such as the flow rates of both phases (effect of CQ = Qd/Qc), the viscosities of both phases (effect of the respective Reynolds number Re), the surface tension (effect of the capillary number) and the geometrical properties of the channel (channel width W and injection angle β) on the bubble formation and its length are compared to available experimental results. The break-up mechanism of the bubbles in various capillary regimes is explained. The computed length of the generated bubbles as a function of the capillary number (varying the flow rate of the continuous phase) are in good agreement with the experiments. Further studies indicate that at a constant flow rate of the continuous phase, the bubble length rises strongly as the flow rate of the disperse phase increases. In contrast, the relative effects of the viscosity and the surface tension on the length of the bubbles are moderate. The numerical results using various injection angles show that the bubble length increases, as the injection angle is raised from β = 45° to β = 90°.

Bubble formation and breakup mechanism in a microfluidic flow-focusing device

2009 ◽  
Vol 64 (10) ◽  
pp. 2392-2400 ◽  
Author(s):  
Taotao Fu ◽  
Youguang Ma ◽  
Denis Funfschilling ◽  
Huai Z. Li
Keyword(s):  
Bubble Formation ◽  
Flow Focusing ◽  
Breakup Mechanism ◽  
Microfluidic Flow

scholarly journals Bubble Formation Dynamics in Various Flow-Focusing Microdevices

Langmuir ◽  
2008 ◽  
Vol 24 (24) ◽  
pp. 13904-13911 ◽  
Author(s):  
N. Dietrich ◽  
S. Poncin ◽  
N. Midoux ◽  
Huai Z. Li
Keyword(s):  
Bubble Formation ◽  
Flow Focusing ◽  
Formation Dynamics
Sign in / Sign up

Export Citation Format

Share Document