Title

Droplet formation and stability of flows in a microfluidic T-junction

Authors

Authors

A. Gupta; S. M. S. Murshed;R. Kumar

Comments

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Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

capillarity; drops; flow instability; lattice Boltzmann methods; microfluidics; viscosity; MICROCHANNELS; BREAK; Physics, Applied

Abstract

Flow regimes obtained as a consequence of two immiscible fluids interacting at a T-junction are presented for high Capillary numbers and different flow rates of the continuous and dispersed phases. Through lattice Boltzmann based simulations, a regime map is created that distinguishes parallel flows from droplet flows. Simulations show the dependence of flow rates and viscosity ratio on the volume of droplets formed, which is compared with existing experimental data. At high Capillary numbers, the transition zone which separates parallel and droplet flows shrinks, and is influenced by the viscosity ratio as well.

Journal Title

Applied Physics Letters

Volume

94

Issue/Number

16

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

3

WOS Identifier

WOS:000265823300099

ISSN

0003-6951

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