A ternary model for double-emulsion formation in a capillary microfluidic device

Title
A ternary model for double-emulsion formation in a capillary microfluidic device
Author(s)
박장민Patrick Anderson[Patrick Anderson]
Keywords
MONODISPERSE DOUBLE EMULSIONS; HELE-SHAW CELL; SIMULATION; DROPS; FLOWS; RECONNECTION; PINCHOFF; BREAKUP; FLUID
Issue Date
201208
Publisher
ROYAL SOC CHEMISTRY
Citation
LAB ON A CHIP, v.12, no.15, pp.2672 - 2677
Abstract
To predict double-emulsion formation in a capillary microfluidic device, a ternary diffuse-interface model is presented. The formation of double emulsions involves complex interfacial phenomena of a three-phase fluid system, where each component can have different physical properties. We use the Navier-Stokes/Cahn-Hilliard model for a general ternary system, where the hydrodynamics is coupled with the thermodynamics of the phase field variables. Our model predicts important features of the double-emulsion formation which was observed experimentally by Utada et al. [Utada et al., Science, 2005, 308, 537]. In particular, our model predicts both the dripping and jetting regimes as well as the transition between those two regimes by changing the flow rate conditions. We also demonstrate that a double emulsion having multiple inner drops can be formed when the outer interface is more stable than the inner interface.
URI
http://hdl.handle.net/YU.REPOSITORY/27572http://dx.doi.org/10.1039/c2lc21235h
ISSN
1473-0197
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공과대학 > 기계공학부 > Articles
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