A Review of Passive Micromixers with a Comparative Analysis
Department of Mechanical Engineering, Inha University, Incheon 22212, Korea
*
Author to whom correspondence should be addressed.
†
These authors contributed equally to this work.
‡
Current address: Department of Industrial and Production Engineering, Jashore University of Science and Technology, Jessore 7408, Bangladesh
Micromachines 2020, 11(5), 455; https://doi.org/10.3390/mi11050455
Received: 2 March 2020
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Revised: 24 April 2020
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Accepted: 24 April 2020
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Published: 27 April 2020
(This article belongs to the Special Issue Analysis, Design and Fabrication of Micromixers)
A wide range of existing passive micromixers are reviewed, and quantitative analyses of ten typical passive micromixers were performed to compare their mixing indices, pressure drops, and mixing costs under the same axial length and flow conditions across a wide Reynolds number range of 0.01–120. The tested micromixers were selected from five types of micromixer designs. The analyses of flow and mixing were performed using continuity, Navier-Stokes and convection-diffusion equations. The results of the comparative analysis were presented for three different Reynolds number ranges: low-Re (Re ≤ 1), intermediate-Re (1 < Re ≤ 40), and high-Re (Re > 40) ranges, where the mixing mechanisms are different. The results show a two-dimensional micromixer of Tesla structure is recommended in the intermediate- and high-Re ranges, while two three-dimensional micromixers with two layers are recommended in the low-Re range due to their excellent mixing performance.
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Keywords:
passive micromixers; comparative analysis; Navier-Stokes equations; mixing index; pressure drop; mixing cost
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MDPI and ACS Style
Raza, W.; Hossain, S.; Kim, K.-Y. A Review of Passive Micromixers with a Comparative Analysis. Micromachines 2020, 11, 455. https://doi.org/10.3390/mi11050455
AMA Style
Raza W, Hossain S, Kim K-Y. A Review of Passive Micromixers with a Comparative Analysis. Micromachines. 2020; 11(5):455. https://doi.org/10.3390/mi11050455
Chicago/Turabian StyleRaza, Wasim, Shakhawat Hossain, and Kwang-Yong Kim. 2020. "A Review of Passive Micromixers with a Comparative Analysis" Micromachines 11, no. 5: 455. https://doi.org/10.3390/mi11050455
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