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

山东科学 ›› 2016, Vol. 29 ›› Issue (5): 81-89.doi: 10.3976/j.issn.1002-4026.2016.05.014

T型微通道内气泡生成大小影响因素研究

吕明明¹，刘志刚¹*，管宁¹，王树众²

1. 山东省科学院流动与强化传热重点实验室，山东省科学院能源研究所，山东济南 250014；
2. 西安交通大学能源与动力工程学院，陕西西安 710049

收稿日期:2016-07-25 出版日期:2016-10-20 发布日期:2016-10-20

Influential factors of bubble length in a T-junction microchannel

LÜ Mingming¹, LIU Zhigang¹*, GUAN Ning¹, WANG Shuzhong²

1.Key Lab for Flow & Enhanced Heat Transfer of Shandong Academy of Sciences, Energy Research Institute,Shandong Academy of Sciences, Jinan 250014, China; 2. School of Energy and Power Engineering, Xi′an Jiaotong University, Xi′an 710049, China

Received:2016-07-25 Online:2016-10-20 Published:2016-10-20

摘要/Abstract

摘要：

采用流体体积函数（VOF）方法，对T型微通道中气泡形成过程进行数值模拟研究，根据气泡形成机理，分析了气液流速、流体性质和微通道尺寸等因素对生成气泡大小的影响。研究结果表明，T型微通道内生成气泡长度随气体份额的增加呈指数增加趋势，而在相同气体份额下气液流速对气泡长度影响不大；比较而言，液体粘度和表面张力对生成气泡大小的影响较小，当液相表面张力从0.072 N·m-1降低到0.01 N·m-1时，T型微通道内生成气泡的长度减小了18%，主要是因为在阻塞阶段，最大颈部宽度和塌陷时间减小了；气泡长度随微通道直径的增加而增大，而气泡的无量纲长度基本不受微通道直径的影响。

关键词: 气泡, 卡断机理, 微通道, 数值模拟, 表面张力

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

中图分类号:

TK124

吕明明，刘志刚，管宁，王树众. T型微通道内气泡生成大小影响因素研究[J]. 山东科学, 2016, 29(5): 81-89.

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.

参考文献

［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.

[1]	张国建, 孟浩, 熊威, 白涛, 孟现臣, 王军, 吕晓. 人工湖下连采连充煤炭开采地表移动变形预测研究[J]. 山东科学, 2023, 36(5): 33-43.
[2]	李臣豪, 华志励, 何锐, 连军帅, 郝宗睿. 海底冷泉气体渗漏模拟观测系统设计与开发[J]. 山东科学, 2023, 36(1): 10-17.
[3]	李鹏举, 钱林根, 吴强, 黄山, 陈甦. 悬挂式止水帷幕基坑降水开挖对临近高铁桥墩影响[J]. 山东科学, 2022, 35(6): 116-122.
[4]	李化南, 黄继凯, 董开明. 鼓泡流化床异质颗粒混合特性微观研究[J]. 山东科学, 2022, 35(4): 68-76.
[5]	董辉,任旭云. 基于DEM-CFD耦合方法的水合物与砂颗粒运动分析[J]. 山东科学, 2022, 35(3): 123-130.
[6]	王小雨,张聿祥. 内插中心斜杆换热管的换热性能[J]. 山东科学, 2022, 35(3): 35-42.
[7]	季璨, 刘志刚, 吕明明. 余热发电系统双S型旋流片喷嘴内部闪蒸过程数值研究[J]. 山东科学, 2021, 34(6): 77-82.
[8]	高国强, 陈国富. 多元流体油藏传热计算新模型[J]. 山东科学, 2021, 34(5): 49-57.
[9]	纪君娜. 栅栏板护面下护岸越浪数值模拟[J]. 山东科学, 2021, 34(4): 14-20.
[10]	黄庭祥, 胡成功, 姜小辉, 孙晓, 曹亮, 赵红霞. 双层皮带机防雨罩流场和粉尘浓度场分析[J]. 山东科学, 2021, 34(4): 80-86.
[11]	霍慕杰, 别海燕, 林子昕, 安维中. 转子流道倾斜式的外驱旋转压能交换器性能研究[J]. 山东科学, 2020, 33(6): 16-21.
[12]	刘进, 蒋慧略, 刘波, 杜大伟. 汽车外流场分析以及流线型改进[J]. 山东科学, 2020, 33(3): 87-92.
[13]	温永祺, 谢东繁, 王祥, 周豪. 基于车间通信的换道策略研究[J]. 山东科学, 2019, 32(4): 46-55.
[14]	徐娟, 刘波, 华志励. 冷泉水体甲烷气体浓度反演方法研究[J]. 山东科学, 2019, 32(3): 10-15.
[15]	孙德智，王桂青, 田长文. 基于MAGMASOFT的大型铝合金叶轮铸造工艺模拟[J]. 山东科学, 2018, 31(4): 44-49.

T型微通道内气泡生成大小影响因素研究

Influential factors of bubble length in a T-junction microchannel

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 0