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Numerical Investigation of Mixing by Induced Electrokinetic Flow in T-Micromixer with Conductive Curved Arc Plate
被引:12
作者:
Goodarzi, Vahabodin
[1
]
Jafarbeygi, Saeed Hayati
[1
]
Taheri, Ramezan Ali
[2
]
Sheremet, Mikhail
[3
,4
]
Ghalambaz, Mohammad
[5
,6
]
机构:
[1] Baqiyatallah Univ Med Sci, Appl Biotechnol Res Ctr, POB 19945-546, Tehran, Iran
[2] Baqiyatallah Univ Med Sci, Nanobiotechnol Res Ctr, POB 1435116471, Tehran, Iran
[3] Tomsk State Univ, Lab Convect Heat & Mass Transfer, Tomsk 634050, Russia
[4] Natl Res Tomsk Polytech Univ, Butakov Res Ctr, Tomsk 634050, Russia
[5] Ton Duc Thang Univ, Metamat Mech Biomech & Multiphys Applicat Res Grp, Ho Chi Minh City 758307, Vietnam
[6] Ton Duc Thang Univ, Fac Appl Sci, Ho Chi Minh City 758307, Vietnam
来源:
SYMMETRY-BASEL
|
2021年
/
13卷
/
06期
关键词:
micromixer;
electrokinetic;
conductive curved arc plate;
numerical simulation;
NON-NEWTONIAN FLUIDS;
ELECTROOSMOTIC FLOW;
PASSIVE MICROMIXER;
SIMULATION;
EFFICIENCY;
MICROCHANNEL;
ENHANCEMENT;
PERFORMANCE;
PARTICLES;
PATTERNS;
D O I:
10.3390/sym13060915
中图分类号:
O [数理科学和化学];
P [天文学、地球科学];
Q [生物科学];
N [自然科学总论];
学科分类号:
07 ;
0710 ;
09 ;
摘要:
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%.
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页数:30
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