T型微通道内气泡生成大小影响因素研究

doi:10.3976/j.issn.1002-4026.2016.05.014

Abstract

Abstract:

We performed numerical simulation for bubble formation process in a T-junction microchannel with volume of fluid method (VOF). We also analyzed the impact of gas/liquid fluid velocity, fluid properties and microchannel diameter on bubble length based on bubble formation mechanism. Results demonstrate that the bubble length exponentially increases with the increase of gas fraction in T-junction microchannel, but gas/liquid fluid velocity has little effect on bubble length for fixed gas fraction. Liquid viscosity and surface tension comparatively have less effect on bubble length. When surface tension of liquid phase reduces from 0.072 N·m-1 to 0.01 N·m-1, the bubble length in T-junction microchannel decreases by 18%. This is because that maximum neck width and collapse time decrease in expansion stage of bubble formation process. The bubble length increases with the increase of microchannel diameter, but dimensionless length of the bubble is less influenced by microchannel diameter.

Key words: bubble, surface tension, microchannel, numerical simulation, snap-off

CLC Number:

TK124

Lü Mingming, LIU Zhigang, GUAN Ning, WANG Shuzhong. Influential factors of bubble length in a T-junction microchannel[J].SHANDONG SCIENCE, 2016, 29(5): 81-89.

References

［1］孙晓，王树众，白玉.交联氮气泡沫压裂液的携砂性能研究［J］．工程热物理学报，2011，32(1)：67-70.
［2］刘祖鹏，李兆敏.CO2驱油泡沫防气窜技术实验研究［J］．西南石油大学学报（自然科学版），2015，37（5）：117-122.
［3］吕明明，王树众．二氧化碳泡沫稳定性及聚合物对其泡沫性能的影响［J］，化工学报，2014，65（6）：2219-2224.
［4］LI S Y, LI Z M , LI B F. Experimental study on foamed gel flow in porous media［J］. Journal of Porous Media, 2015, 18(5):519536.
［5］TALEBIAN S H, MASOUDI R, TAN I M, et al. Foam assisted CO2EOR: A review of concept, challenges, and future prospects ［J］. Journal of Petroleum Science and Engineering, 2014, 120(8):202-215.
［6］FARAJZADEH R, ANDRIANOW A, BRUINING H, et al. Comparative study of CO2 and N2 foams in porous media at low and high pressure and temperatures［J］. Industrial and Engineering Chemistry Research, 2009, 48(9): 4542-4552.
［7］ASGHARI K, KHALIL F. Operation parameters on CO2foam process［J］. Petroleum Science and Technology, 2005, 23(2):189-198.
［8］SHAN D, ROSSEN W R. Optimal injection strategies for foa m IOR［J］. SPE Journal, 2004, 9(2):132-150.
［9］KIM J S, DONG Y, ROSSEN W R. Steadystate flow behavior of CO2 foam［J］. SPE Journal, 2005,10(4): 405-415.
［10］ETTINGER R A, RADKE C J. Influence of texture on steady foam flow in Berea sandstone［J］. SPE Reservoir Engineering, 1992, 7(1): 83-90
［11］KOVSCEK A R, TANG G Q, RADKE C J. Verification of roof snap off as a foamgeneration mechanism in porous media at steady state［J］. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2007, 302(1/2/3):251-260
［12］GAUTEPLASSA J, CHAUDHARYB K, KOVSCEK A R, et al. Porelevel foam generation and flow for mobility control in fractured systems［J］. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2015, 468:184-192.
［13］HIRT C W, NICHOLS B D. Volume of fluid (VOF) method for the dynamics of free boundaries［J］. Journal of Computational Physic, 1981, 39(1):201-225.
［14］BRACKBILL J U, KOTHE D B, ZEMACH C. A continuum method for modeling surface tension［J］. Journal of Computational Physics, 1992, 100(2):335-354.
［15］YOUNGS D L. Timedependent multimaterial flow with large fluid distortion［M］∥Numerical methods for fluid dynamics. New York: Academic Press, 1982: 273-285.
［16］DAI L, CAI W F, XIN F. Numerical study on bubble formation of a gasliquid flow in a Tjunction microchannel［J］. Chemical Engineering & Technology, 2009, 32(12): 1984-1991.
［17］GARSTECKI P, FUERSTMAN M J, STONE H 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.

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Influential factors of bubble length in a T-junction microchannel

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