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ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL SIMULATION OF THE DROPLET BREAKUP WITH PERMANENT OBSTRUCTION IN MICROFLUIDIC T-JUNCTION
Submission Author:
Angel Mora , PR
Co-Authors:
Ana Silva, Sandro Metrevelle Marcondes de Lima e Silva, Bruno de Campos Salles Anselmo
Presenter: Bruno de Campos Salles Anselmo
doi://10.26678/ABCM.ENCIT2018.CIT18-0480
Abstract
The mechanisms of droplet breakup in a Microfluidic T-junction are mainly influenced by the capillary number (Ca) and the ratio between the length of the droplet and the transverse dimension of the microchannel (l_o⁄w). This work presents numerical simulations of an isolated liquid Taylor drop within a rectangular microchannel with T-junction in the range of capillary numbers of 0.0096 to 0.0904 and viscosity ratio of the dispersed and continuous phases of μ_d⁄μ_c =0.125. The numerical simulations were carried out with OpenFOAM 2.4 code by using the S-CLSVOF methodology which was implemented for this study. The use of S-CLSVOF and controlling time step and mesh resolution were able to increase the accuracy of capturing the interface dynamics. The results showed that the mechanisms of a droplet breakup inside a T junction are in a good agreement with literature.
Keywords
Microfluidic, OpenFOAM, T-junction, S-CLSVOF
