Droplet formation via squeezing mechanism in a microfluidic flow-focusing device

被引:39
|
作者
Gupta, Amit [1 ]
Matharoo, Harpreet S. [1 ]
Makkar, Devavret [1 ]
Kumar, Ranganathan [2 ]
机构
[1] Indian Inst Technol Delhi, Dept Mech Engn, New Delhi 110016, India
[2] Univ Cent Florida, Dept Mech Mat & Aerosp Engn, Orlando, FL 32816 USA
关键词
Lattice Boltzmann; Microfluidics; Flow-focusing; Droplet formation; T-JUNCTION; FLUID; BREAK;
D O I
10.1016/j.compfluid.2014.05.023
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
In this work, the formation of droplets in a microfluidic flow-focusing device is studied and presented. Spurious velocities at the fluid-fluid interface were found to be very small in the lattice Boltzmann simulations. Using this technique, simulations have been performed to study the effect of geometry on formation of droplets for a microfluidic flow-focusing device. The effect of orifice width, orifice length and distance of the orifice on the mechanism of droplet formation and size of droplets is presented for different Capillary numbers. It is shown that, for Ca << 1, creation of droplets proceeds through the squeezing process that has earlier been observed in the T-junction configuration. The size of droplets increases with an increase in the (a) width, and (b) distance of orifice from the inlet. On increasing orifice length, droplet size first decreases to a minimum and increases thereafter. This study also reveals that the size of droplets becomes independent and approaches a constant beyond a critical value of the orifice length. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码:218 / 226
页数:9
相关论文
共 50 条
  • [21] Pinch-off mechanism for Taylor bubble formation in a microfluidic flow-focusing device
    Yutao Lu
    Taotao Fu
    Chunying Zhu
    Youguang Ma
    Huai Z. Li
    Microfluidics and Nanofluidics, 2014, 16 : 1047 - 1055
  • [22] Regulation of droplet size and flow regime by geometrical confinement in a microfluidic flow-focusing device
    Sontti, Somasekhara Goud
    Atta, Arnab
    PHYSICS OF FLUIDS, 2023, 35 (01)
  • [23] Effect of Intersection Angle and Wettability on Droplet Generation in Microfluidic Flow-Focusing Device
    Iqbal, Saima
    Bashir, Shazia
    Ahsan, Muhammad
    Bashir, Muhammad
    Shoukat, Saad
    JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 2020, 142 (04):
  • [24] Study on Flow-Focusing Microfluidic Device with External Electric Field for Droplet Generation
    Cuong Nguyen Nhu
    Hang Nguyen Thu
    Luan Le Van
    Trinh Chu Duc
    Van Thanh Dau
    Tung Thanh Bui
    ADVANCES IN ENGINEERING RESEARCH AND APPLICATION, 2019, 63 : 553 - 559
  • [25] Numerical investigation of electrohydrodynamic effect for size-tunable droplet formation in a flow-focusing microfluidic device
    Majd, Sara Alizadeh
    Zand, Mahdi Moghimi
    Javidi, Reza
    Rahimian, Mohammad Hassan
    SOFT MATERIALS, 2023, 21 (02) : 174 - 190
  • [26] SIMPLE FLOW-FOCUSING MICROFLUIDIC CHIP FOR DROPLET GENERATION
    Krivankova, Jana
    Basova, Evgenia
    Foret, Frantisek
    CECE 2015: 12TH INTERNATIONAL INTERDISCIPLINARY MEETING ON BIOANALYSIS, 2015, : 127 - 129
  • [27] Performance tuning of microfluidic flow-focusing droplet generators
    Lashkaripour, Ali
    Rodriguez, Christopher
    Ortiz, Luis
    Densmore, Douglas
    LAB ON A CHIP, 2019, 19 (06) : 1041 - 1053
  • [28] Droplet DNA binding detection on microfluidic flow-focusing
    Kim, Sunggu
    Lee, Junghoon
    2015 IEEE SENSORS, 2015, : 950 - 952
  • [29] Negative Pressure Provides Simple and Stable Droplet Generation in a Flow-Focusing Microfluidic Device
    Filatov, Nikita A.
    Evstrapov, Anatoly A.
    Bukatin, Anton S.
    MICROMACHINES, 2021, 12 (06)
  • [30] Development of a microfluidic flow-focusing droplet generating device utilising rapid prototyping technique
    Xuan, Loc Pham
    Quang, Loc Do
    Quoc, Tuan Vu
    Nhu, Cuong Nguyen
    Thu, Hang Nguyen
    Thanh, Hang Tran
    Ngoc, An Nguyen
    Bui, Tung Thanh
    Duc, Trinh Chu
    INTERNATIONAL JOURNAL OF NANOTECHNOLOGY, 2020, 17 (7-10) : 708 - 721