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Title: An investigation on the mechanism of droplet formation in a microfluidic T-junction
Authors: Sivasamy Jayaprakash
Wong, Teck Neng
Nguyen, Nam-Trung
Kao, Linus Tzu-Hsiang
Keywords: DRNTU::Engineering::Mechanical engineering
Issue Date: 2011
Source: Sivasamy, J., Wong, T. N., Nguyen, N. T. & Kao, L. T. H. (2011). An investigation on the mechanism of droplet formation in a microfluidic T-junction. Microfluidics and Nanofluidics, 11(1), 1-10.
Series/Report no.: Microfluidics and nanofluidics
Abstract: This paper reports the findings of a numerical investigation on the droplet break-up in a microfluidic T-junction. The numerical flow visualization of the droplet formation process is validated with the experimental flow visualization. From the computational results, we show that the pressure profile of the dispersed phase and the continuous phase in the squeezing regime changes as the droplet break-up process proceeds. The assumption taken by other researchers that the dispersed phase pressure profile, during the droplet formation process at a T-junction, remains constant and only the continuous phase pressure changes according to the blockage of the channel is proved to be invalid. We provide new insights on the pressure difference between the dispersed phase and the continuous phase during the droplet break-up process and show that the minimum pressure difference happens at the last moment of the droplet break-up and not during the second and third stage of the droplet formation mechanism in the squeezing regime as suggested by other researchers.
DOI: 10.1007/s10404-011-0767-8
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2011 Springer-Verlag. This is the author created version of a work that has been peer reviewed and accepted for publication by Microfluidics and nanofluidics, Springer-Verlag. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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