2D phase-field simulation and experimental validation of droplet formation in a flow-focusing junction

Date

2020-10-04

Author

Atik, Ali Can
Yıldırım, Ender
Külah, Haluk

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In this study, we investigated the performance of 2D simulations to predict the droplet sizes under varying flow conditions. Simple 2D models are lacking in presenting correct results because the top and bottom wall boundaries are excluded despite their significant effect on the flow construction. Here, we added an extra drag term representing the pressure drop due to the resistance of these boundaries to the Navier-Stokes equation. We compared the modified 2D model with the 3D model and experimental data, realized by using PDMS microdevices. The experimental droplet dimensions were well-matched with the numeric results, which suggests accurate modeling of droplet formation for a high degree of control over drop size.

Subject Keywords

Droplet formation, Flow-focusing junction, Phase-field model

URI

https://hdl.handle.net/11511/87625
https://www.scopus.com/record/display.uri?eid=2-s2.0-85098284180&origin=resultslist&sort=plf-f&src=s&st1=&st2=&sid=7a6a06e686d960a6848a841104d99b40&sot=b&sdt=b&sl=118&s=TITLE-ABS-KEY+%282D+PHASE-FIELD+SIMULATION+AND+EXPERIMENTAL+VALIDATION+OF+DROPLET+FORMATION+IN+A+FLOW-FOCUSING+JUNCTION%29&relpos=0&citeCnt=0&searchTerm=

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Department of Electrical and Electronics Engineering, Conference / Seminar