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31 December 2020 Numerical analysis of fluid flow and mixing performance for a SAR-based passive micromixer
Viorel Ionescu
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Proceedings Volume 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X; 117180I (2020) https://doi.org/10.1117/12.2570467
Event: Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies 2020, 2020, Online Only
Abstract
An important part of microfluidic device technology is based on passive (static) micromixers, with a structure of microchannels organized in special configurations, in order to produce an efficient mixing of different types of solutions. In this study it was developed numerically using the Finite Element Method (FEM) based Comsol Multiphysics software a special type of Split and Recombine (SAR) micromixer model with two mixing units, based on a Grey topology. Three types of glycerol - water solutions have been considered for the performance investigation of this SAR mixing model. Degrees of mixing δm of 0.74 and 0.73 were computed for the water based solutions having 10% wt. glycerol and 20% wt. glycerol at an inlet flow rate of 1×10-8 m3/s, obtained with the compromise of pressure drops of 161 Pa and 203 Pa, respectively. A much lower mixing degree, of only 0.43, was registered at the same flow rate for the solution with 35% wt. glycerol, at a higher pressure drop of 316 Pa.
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Viorel Ionescu "Numerical analysis of fluid flow and mixing performance for a SAR-based passive micromixer", Proc. SPIE 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X, 117180I (31 December 2020); https://doi.org/10.1117/12.2570467
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KEYWORDS
Microfluidics
Diffusion
Finite element methods
Fluid dynamics
Numerical analysis
Computational fluid dynamics
Computer simulations
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