NDLI: Cross-stream diffusion under pressure-driven flow in microchannels with arbitrary aspect ratios: a phase diagram study using a three-dimensional analytical model

Content Provider	Springer Nature Link
Author	Song, Hongjun Wang, Yi Pant, Kapil
Copyright Year	2011
Abstract	This article presents a three-dimensional analytical model to investigate cross-stream diffusion transport in rectangular microchannels with arbitrary aspect ratios under pressure-driven flow. The Fourier series solution to the three-dimensional convection–diffusion equation is obtained using a double integral transformation method and associated eigensystem calculation. A phase diagram derived from the dimensional analysis is presented to thoroughly interrogate the characteristics in various transport regimes and examine the validity of the model. The analytical model is verified against both experimental and numerical models in terms of the concentration profile, diffusion scaling law, and mixing efficiency with excellent agreement (with <0.5% relative error). Quantitative comparison against other prior analytical models in extensive parameter space is also performed, which demonstrates that the present model accommodates much broader transport regimes with significantly enhanced applicability.
Starting Page	265
Ending Page	277
Page Count	13
File Format	PDF
ISSN	16134982
Journal	Microfluidics and Nanofluidics
Volume Number	12
Issue Number	1-4
e-ISSN	16134990
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-08-21
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cross-stream diffusion Mixing Microfluidics Pressure-driven flow Industrial Chemistry/Chemical Engineering Biomedical Engineering Engineering Fluid Dynamics
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Materials Chemistry Condensed Matter Physics Electronic, Optical and Magnetic Materials

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