CLC number:
On-line Access: 2022-10-20
Received: 2022-03-24
Revision Accepted: 2022-06-29
Crosschecked: 2022-10-21
Cited: 0
Clicked: 1002
Citations: Bibtex RefMan EndNote GB/T7714
Jin-yuan QIAN, Lei ZHAO, Xiao-juan LI, Wen-qing LI, Zhi-jiang JIN. Effect of droplet superficial velocity on mixing efficiency in a microchannel[J]. Journal of Zhejiang University Science A, 2022, 23(10): 783-794.
@article{title="Effect of droplet superficial velocity on mixing efficiency in a microchannel",
author="Jin-yuan QIAN, Lei ZHAO, Xiao-juan LI, Wen-qing LI, Zhi-jiang JIN",
journal="Journal of Zhejiang University Science A",
volume="23",
number="10",
pages="783-794",
year="2022",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A2200159"
}
%0 Journal Article
%T Effect of droplet superficial velocity on mixing efficiency in a microchannel
%A Jin-yuan QIAN
%A Lei ZHAO
%A Xiao-juan LI
%A Wen-qing LI
%A Zhi-jiang JIN
%J Journal of Zhejiang University SCIENCE A
%V 23
%N 10
%P 783-794
%@ 1673-565X
%D 2022
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A2200159
TY - JOUR
T1 - Effect of droplet superficial velocity on mixing efficiency in a microchannel
A1 - Jin-yuan QIAN
A1 - Lei ZHAO
A1 - Xiao-juan LI
A1 - Wen-qing LI
A1 - Zhi-jiang JIN
J0 - Journal of Zhejiang University Science A
VL - 23
IS - 10
SP - 783
EP - 794
%@ 1673-565X
Y1 - 2022
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A2200159
Abstract: In this study, droplet characteristics including droplet length and formation time, and mixing efficiency in droplets were investigated via the volume of fluid (VOF) method coupled with a user defined scalar (UDS) model. A cross-shaped junction with a square cross-section was designed and used for droplet formation. An initial arrangement which differed from that of a conventional operation was adopted. Results show that when the droplet superficial velocity is constant, the exchange between the dispersed phase velocity and the continuous phase velocity has a marginal effect on the droplet formation time. However, the exchange has a great effect on droplet length. These findings provide a valuable guide for future operation of droplet formation. In addition, the results show that the mixing efficiency in the droplet forming stage can be classified into time-dominated and length-dominated regimes according to the droplet superficial velocity. When a droplet flows in a microchannel, a higher droplet superficial velocity increases mixing efficiency due to the faster inner circulation and shorter droplet length.
[1]ArjunA, AjithRR, RanjithSK, 2020. Mixing characterization of binary-coalesced droplets in microchannels using deep neural network. Biomicrofluidics, 14(3):034111.
[2]BaiL, ZhaoSF, FuYH, et al., 2016. Experimental study of mass transfer in water/ionic liquid microdroplet systems using micro-LIF technique. Chemical Engineering Journal, 298:281-290.
[3]BaiL, FuYH, YaoM, et al., 2018. Enhancement of mixing inside ionic liquid droplets through various micro-channels design. Chemical Engineering Journal, 332:537-547.
[4]BorgohainP, ChoudharyD, DalalA, et al., 2018. Numerical investigation of mixing enhancement for multi-species flows in wavy channels. Chemical Engineering and Processing-Process Intensification, 127:191-205.
[5]CaoYR, AdriaenssensB, deA. Bartolomeu A, et al., 2020. Accelerating sulfonyl fluoride synthesis through electrochemical oxidative coupling of thiols and potassium fluoride in flow. Journal of Flow Chemistry, 10(1):191-197.
[6]CaoZ, WuZ, SundénB, 2018. Dimensionless analysis on liquid-liquid flow patterns and scaling law on slug hydrodynamics in cross-junction microchannels. Chemical Engineering Journal, 344:604-615.
[7]ChristopherGF, NoharuddinNN, TaylorJA, et al., 2008. Experimental observations of the squeezing-to-dripping transition in T-shaped microfluidic junctions. Physical Review E, 78(3):036317.
[8]DaiS, LuoJH, LiJ, et al., 2017. Liquid–liquid microextraction of Cu2+ from water using a new circle microchannel device. Industrial & Engineering Chemistry Research, 56(44):12717-12725.
[9]DengNN, SunSX, WangW, et al., 2013. A novel surgery-like strategy for droplet coalescence in microchannels. Lab on a Chip, 13(18):3653-3657.
[10]FuYH, WangH, ZhangX, et al., 2019. Numerical simulation of liquid mixing inside soft droplets with periodic deformation by a lattice Boltzmann method. Journal of the Taiwan Institute of Chemical Engineers, 98:37-44.
[11]Hosseini KakavandiF, RahimiM, JafariO, et al., 2016. Liquid–liquid two-phase mass transfer in T-type micromixers with different junctions and cylindrical pits. Chemical Engineering and Processing-Process Intensification, 107:58-67.
[12]JinZJ, QiuC, JiangCH, et al., 2020. Effect of valve core shapes on cavitation flow through a sleeve regulating valve. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 21(1):1-14. http://doi.org/10.1631/jzus.A1900528
[13]KorczykPM, van SteijnV, BlonskiS, et al., 2019. Accounting for corner flow unifies the understanding of droplet formation in microfluidic channels. Nature Communications, 10(1):2528.
[14]LiuYY, ZhaoQK, YueJ, et al., 2021. Effect of mixing on mass transfer characterization in continuous slugs and dispersed droplets in biphasic slug flow microreactors. Chemical Engineering Journal, 406:126885.
[15]LuoXM, YinHR, RenJ, et al., 2019. Enhanced mixing of binary droplets induced by capillary pressure. Journal of Colloid and Interface Science, 545:35-42.
[16]MadadelahiM, ShamlooA, 2017. Droplet-based flows in serpentine microchannels: chemical reactions and secondary flows. International Journal of Multiphase Flow, 97:186-196.
[17]MehtaV, RathSN, 2021. 3D printed microfluidic devices: a review focused on four fundamental manufacturing approaches and implications on the field of healthcare. Bio-Design and Manufacturing, 4(2):311-343.
[18]MuXT, JuXJ, ZhangL, et al., 2019. Chitosan microcapsule membranes with nanoscale thickness for controlled release of drugs. Journal of Membrane Science, 590:117275.
[19]NiculescuAG, ChircovC, BircaAC, et al., 2021. Fabrication and applications of microfluidic devices: a review. International Journal of Molecular Sciences, 22(4):2011.
[20]NisisakoT, ToriiT, HiguchiT, 2004. Novel microreactors for functional polymer beads. Chemical Engineering Journal, 101(1-3):23-29.
[21]OishiM, KinoshitaH, FujiiT, et al., 2009. Confocal micro-PIV measurement of droplet formation in a T-shaped micro-junction. Journal of Physics: Conference Series, 147:012061.
[22]ÖzkanA, ErdemEY, 2015. Numerical analysis of mixing performance in sinusoidal microchannels based on particle motion in droplets. Microfluidics and Nanofluidics, 19(5):1101-1108.
[23]QianJY, LiXJ, GaoZX, et al., 2019a. Mixing efficiency analysis on droplet formation process in microchannels by numerical methods. Processes, 7(1):33.
[24]QianJY, LiXJ, GaoZX, et al., 2019b. Mixing efficiency and pressure drop analysis of liquid-liquid two phases flow in serpentine microchannels. Journal of Flow Chemistry, 9(3):187-197.
[25]QianJY, ChenMR, LiuXL, et al., 2019c. A numerical investigation of the flow of nanofluids through a micro Tesla valve. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 20(1):50-60. http://doi.org/10.1631/jzus.A1800431
[26]QianJY, MuJ, HouCW, et al., 2021. A parametric study on unbalanced moment of piston type valve core. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 22(4):265-276. http://doi.org/10.1631/jzus.A2000582
[27]Sattari-NajafabadiM, Nasr EsfahanyM, WuZ, et al., 2017. Hydrodynamics and mass transfer in liquid-liquid non-circular microchannels: comparison of two aspect ratios and three junction structures. Chemical Engineering Journal, 322:328-338.
[28]SuYH, ZhaoYC, ChenGW, et al., 2010. Liquid-liquid two-phase flow and mass transfer characteristics in packed microchannels. Chemical Engineering Science, 65(13):3947-3956.
[29]TanthapanichakoonW, AokiN, MatsuyamaK, et al., 2006. Design of mixing in microfluidic liquid slugs based on a new dimensionless number for precise reaction and mixing operations. Chemical Engineering Science, 61(13):4220-4232.
[30]TiceJD, SongHL, LyonAD, et al., 2003. Formation of droplets and mixing in multiphase microfluidics at low values of the Reynolds and the capillary numbers. Langmuir, 19(22):9127-9133.
[31]TsaoulidisD, AngeliP, 2015. Effect of channel size on mass transfer during liquid-liquid plug flow in small scale extractors. Chemical Engineering Journal, 262:785-793.
[32]WangJJ, WangJN, FengLF, et al., 2015. Fluid mixing in droplet-based microfluidics with a serpentine microchannel. RSC Advances, 5(126):104138-104144.
[33]WuJY, YueY, LiJY, et al., 2022. Circumferential design of throttling window of main feed water regulating valve and its influence on flow characteristics. Chinese Journal of Engineering Design, 29(1):74-81 (in Chinese).
[34]YehSI, SheenHJ, YangJT, 2015. Chemical reaction and mixing inside a coalesced droplet after a head-on collision. Microfluidics and Nanofluidics, 18(5-6):1355-1363.
[35]ZhangJ, XuWH, XuFY, et al., 2021. Microfluidic droplet formation in co-flow devices fabricated by micro 3D printing. Journal of Food Engineering, 290:110212.
[36]ZhangPF, XuXG, HuaYJ, et al., 2022. Effects of the outlet pressure on two-phase slug flow distribution uniformity in a multi-branch microchannel. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 23(1):68-82.
[37]ZhangQ, LiuHC, ZhaoSN, et al., 2019. Hydrodynamics and mass transfer characteristics of liquid–liquid slug flow in microchannels: the effects of temperature, fluid properties and channel size. Chemical Engineering Journal, 358:794-805.
[38]ZhangY, ZhangXB, XuBJ, et al., 2015. CFD simulation of mass transfer intensified by chemical reactions in slug flow microchannels. The Canadian Journal of Chemical Engineering, 93(12):2307-2314.
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