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Numerical and experimental investigations of the formation process of ferrofluid droplets

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Numerical and experimental investigations of the formation process of ferrofluid droplets

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Title: Numerical and experimental investigations of the formation process of ferrofluid droplets
Author: Liu, Jing; Tan, Say-Hwa; Yap, Yit Fatt; Ng, Min Yuan; Nguyen, Nam-Trung
Copyright year: 2011
Abstract: This paper reports both experimental and numerical investigations of the formation process of ferrofluid droplets in a flow focusing configuration with and without an applied magnetic field. In the experiment, the homogenous magnetic field was generated using an electromagnet. The magnetic field in the flow direction affects the formation process and changes the size of the droplets. The change in the droplet size depends on the magnetic field strength and the flow rates. A numerical model was used to investigate the force balance during the droplet breakup process. A linearly magnetizable fluid was assumed. Particle level set method was employed to capture the interface movement between the continuous fluid and the dispersed fluid. Results of the droplet formation process and the flow field are discussed for both cases with and without the magnetic field. Finally, experimental and numerical results are compared.
Subject: DRNTU::Engineering::Mechanical engineering.
Type: Journal Article
Series/ Journal Title: Microfluidics and nanofluidics
School: School of Mechanical and Aerospace Engineering
Rights: © 2011 Springer-Verlag. This is the author created version of a work that has been peer reviewed and accepted for publication by Microfluidics and nanofluidics, Springer-Verlag. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: http://dx.doi.org/10.1007/s10404-011-0784-7.

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