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Article

Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate

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Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran P.O. Box 19945-546, Iran
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Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran P.O. Box 1435116471, Iran
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Laboratory on Convective Heat and Mass Transfer, Tomsk State University, 634050 Tomsk, Russia
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Butakov Research Center, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia
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Metamaterials for Mechanical, Biomechanical and Multiphysical Applications Research Group, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
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Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
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Author to whom correspondence should be addressed.
Academic Editor: Rahmat Ellahi
Symmetry 2021, 13(6), 915; https://doi.org/10.3390/sym13060915
Received: 27 March 2021 / Revised: 28 April 2021 / Accepted: 6 May 2021 / Published: 21 May 2021
(This article belongs to the Special Issue Recent Advances in Conjugate Heat Transfer)
Mixing is essential in microdevices. Therefore, increasing the mixing efficiency has a significant influence on these devices. Using conductive obstacles with special geometry can improve the mixing quality of the micromixers. In this paper, a numerical study on the mixing caused by an induced-charge electrokinetic micromixer was carried out using a conductive plate with a curved arc shape instead of a conductive flat plate or other non-conductive obstacles for Newtonian fluids. This study also explored the effect of the different radius curves, span length, the number of curved arc plates in the channel, the pattern of arrangement, concavity direction, and the orientation angle against the flow on the mixing. Furthermore, the efficiency of the T-micromixer against a flow with a low diffusion coefficient was investigated. It should be noted that the considered channel is symmetric regarding to the middle horizontal plane and an addition of flat plate reflects a formation of symmetric flow structures that do not allow to improve the mixture process. While an addition of non-symmetric curved arc plates al-lows to increase the mixing by creating vortices. These vortices were created owing to the non-uniform distribution of induced zeta potential on the curved arc plate. A rise in the span length of the curved arc plate when the radius was constant improved the mixing. When three arc plates in one concavity direction were used, the mixing efficiency was 91.86%, and with a change in the concavity direction, the mixing efficiency increased to 95.44%. With a change in the orientation angle from 0 to 25, the mixing efficiency increased by 19.2%. View Full-Text
Keywords: micromixer; electrokinetic; conductive curved arc plate; numerical simulation micromixer; electrokinetic; conductive curved arc plate; numerical simulation
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MDPI and ACS Style

Goodarzi, V.; Jafarbeygi, S.H.; Taheri, R.A.; Sheremet, M.; Ghalambaz, M. Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate. Symmetry 2021, 13, 915. https://doi.org/10.3390/sym13060915

AMA Style

Goodarzi V, Jafarbeygi SH, Taheri RA, Sheremet M, Ghalambaz M. Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate. Symmetry. 2021; 13(6):915. https://doi.org/10.3390/sym13060915

Chicago/Turabian Style

Goodarzi, Vahabodin, Saeed H. Jafarbeygi, Ramezan A. Taheri, Mikhail Sheremet, and Mohammad Ghalambaz. 2021. "Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate" Symmetry 13, no. 6: 915. https://doi.org/10.3390/sym13060915

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