Numerical investigation of the effect of insoluble surfactant on drop formation in microfluidic device

Title
Numerical investigation of the effect of insoluble surfactant on drop formation in microfluidic device
Author(s)
박장민Martien Hulsen[Martien Hulsen]Patrick Anderson[Patrick Anderson]
Keywords
EXTENSIONAL FLOW; DEFORMATION; BREAKUP; INTERFACE; DYNAMICS; JUNCTION; FLUIDS; SHEAR
Issue Date
201305
Publisher
SPRINGER HEIDELBERG
Citation
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, v.222, no.1, pp.199 - 210
Abstract
Surfactants are commonly used in droplet-based microfluidics to stabilize the droplet interface. In this study, we investigate the effect of insoluble surfactant on drop formation in a capillary microfluidic device. We use a diffuse-interface method to describe the evolution of interface involving insoluble surfactant. The Navier-Stokes/Cahn-Hilliard equations and the surfactant conservation equation are solved by a finite element method along with a grid deformation method. As the surfactant has a non-uniform distribution during the drop formation in general, the surface tension has a gradient on the interface, which affects the flow field and interface evolution. The surfactant effect is discussed for dripping and jetting regimes.
URI
http://hdl.handle.net/YU.REPOSITORY/25902http://dx.doi.org/10.1140/epjst/e2013-01835-x
ISSN
1951-6355
Appears in Collections:
공과대학 > 기계공학부 > Articles
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