NDLI: Concentration-dependent viscous mixing in microfluidics: modelings and experiments

Content Provider	Springer Nature Link
Author	Wu, Chaoqun Tang, Kai Gu, Bing Deng, Jie Liu, Zhenhua Wu, Zhigang
Copyright Year	2016
Abstract	In microfluidic mixing, great attention has been devoted to the structural design to enhance mixing efficiency. However, the influence of the variant viscosity in the mixing process is rarely discussed due to the practical challenges originated from the strong and complex couplings between species concentration and other fluid properties such as density, viscosity and diffusion coefficient. In this work, a group of coupling relationships among concentration, density, viscosity, as well as diffusion coefficient are introduced to accurately simulate the mixing process with a viscous flow involved. Compared with the traditional linear approximation, the new approach is more suitable to simulate the concentration-dependent viscous mixing in microfluidics. Furthermore, a planar passive micromixer is designed to validate the coupling approach from both modeling and experiment perspectives. By comparing experimental and numerical results, it turns out that the coupling approach achieves higher accuracy than the traditional linear approximation. In addition, four derived models are experimentally tested and numerically simulated by adopting the new method. The results of each model reach a good agreement between modeling and experiment.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISSN	16134982
Journal	Microfluidics and Nanofluidics
Volume Number	20
Issue Number	6
e-ISSN	16134990
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-05-31
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Concentration-dependent Viscous mixing Fluid properties Passive micromixer Chaotic advection Engineering Fluid Dynamics Biomedical Engineering Analytical Chemistry Nanotechnology and Microengineering
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Materials Chemistry Condensed Matter Physics Electronic, Optical and Magnetic Materials

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