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  • An investigation on the mechanism of droplet formation in a microfluidic T-junction

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    Author(s)
    Sivasamy, Jayaprakash
    Wong, Teck-Neng
    Nam-Trung, Nguyen
    Kao, Linus Tzu-Hsiang
    Griffith University Author(s)
    Nguyen, Nam-Trung
    Year published
    2011
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    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 ...
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    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.
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    Journal Title
    Microfluidics and Nanofluidics
    Volume
    11
    Issue
    1
    DOI
    https://doi.org/10.1007/s10404-011-0767-8
    Copyright Statement
    © 2011 Springer Berlin Heidelberg. This is an electronic version of an article published in Microfluidics and Nanofluidics, Volume 11, Issue 1, pp 1-10, 2011. Microfluidics and Nanofluidics is available online at: http://link.springer.com/ with the open URL of your article.
    Subject
    Mechanical engineering
    Engineering practice and education not elsewhere classified
    Nanotechnology
    Publication URI
    http://hdl.handle.net/10072/62158
    Collection
    • Journal articles

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