Journal
MICROMACHINES
Volume 11, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/mi11050455
Keywords
passive micromixers; comparative analysis; Navier-Stokes equations; mixing index; pressure drop; mixing cost
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Funding
- National Research Foundation of Korea (NRF) - Korean government (MSIT) [2019R1A2C1007657]
- National Research Foundation of Korea [2019R1A2C1007657] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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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