Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate
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-charg...
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MDPI AG
2021-05-01
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| Series: | Symmetry |
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| author | Vahabodin Goodarzi Saeed Hayati Jafarbeygi Ramezan Ali Taheri Mikhail Sheremet Mohammad Ghalambaz |
| author_facet | Vahabodin Goodarzi Saeed Hayati Jafarbeygi Ramezan Ali Taheri Mikhail Sheremet Mohammad Ghalambaz |
| author_sort | Vahabodin Goodarzi |
| collection | DOAJ |
| description | 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%. |
| first_indexed | 2024-03-10T10:48:48Z |
| format | Article |
| id | doaj.art-69579eeda8714d169e5e4608f22002e4 |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-10T10:48:48Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-69579eeda8714d169e5e4608f22002e42023-11-21T22:21:22ZengMDPI AGSymmetry2073-89942021-05-0113691510.3390/sym13060915Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc PlateVahabodin Goodarzi0Saeed Hayati Jafarbeygi1Ramezan Ali Taheri2Mikhail Sheremet3Mohammad Ghalambaz4Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran P.O. Box 19945-546, IranApplied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran P.O. Box 19945-546, IranNanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran P.O. Box 1435116471, IranLaboratory on Convective Heat and Mass Transfer, Tomsk State University, 634050 Tomsk, RussiaMetamaterials for Mechanical, Biomechanical and Multiphysical Applications Research Group, Ton Duc Thang University, Ho Chi Minh City 758307, VietnamMixing 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%.https://www.mdpi.com/2073-8994/13/6/915micromixerelectrokineticconductive curved arc platenumerical simulation |
| spellingShingle | Vahabodin Goodarzi Saeed Hayati Jafarbeygi Ramezan Ali Taheri Mikhail Sheremet Mohammad Ghalambaz Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate Symmetry micromixer electrokinetic conductive curved arc plate numerical simulation |
| title | Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate |
| title_full | Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate |
| title_fullStr | Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate |
| title_full_unstemmed | Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate |
| title_short | Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate |
| title_sort | numerical investigation of mixing by induced electrokinetic flow in t micromixer with conductive curved arc plate |
| topic | micromixer electrokinetic conductive curved arc plate numerical simulation |
| url | https://www.mdpi.com/2073-8994/13/6/915 |
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