Hydrodynamic structures of droplets engineered in rectangular micro-channels

This paper reports on numerical simulations of the hydrodynamics inside droplets in rectangular micro-channels. Two- and three-dimensional simulations are performed thanks to a finite-volume/front-capturing method. Droplet interface deformation and velocity fields inside both droplets and continuous...

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Bibliographic Details
Published in:Microfluidics and nanofluidics 2008-07, Vol.5 (1), p.131-137
Main Authors: Sarrazin, Flavie, Bonometti, Thomas, Prat, Laurent, Gourdon, Christophe, Magnaudet, Jacques
Format: Article
Language:English
Subjects:
Analytical Chemistry
Applied fluid mechanics
Applied sciences
Biomedical Engineering and Bioengineering
Chemical engineering
Deformation
Engineering
Engineering Fluid Dynamics
Exact sciences and technology
Fluid dynamics
Fluidics
Fundamental areas of phenomenology (including applications)
Heat transfer
Hydrodynamics
Nanotechnology and Microengineering
Physics
Reactors
Short Communication
Studies
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Summary:This paper reports on numerical simulations of the hydrodynamics inside droplets in rectangular micro-channels. Two- and three-dimensional simulations are performed thanks to a finite-volume/front-capturing method. Droplet interface deformation and velocity fields inside both droplets and continuous phase can then be followed. This study leads to important results about droplet deformation and inner streamlines for mass and heat transfer studies. More particularly, the capillary number seems to have a great influence on the liquid/liquid flow hydrodynamics and this impact on film thickness and slip velocity is quantified through correlations.
ISSN:1613-4982
1613-4990
DOI:10.1007/s10404-007-0233-9