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  • Nonlinear deformation of a ferrofluid droplet in a uniform magnetic field

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    96047_1.pdf (691.6Kb)
    Author(s)
    Zhu, Gui-Ping
    Nam-Trung, Nguyen
    Ramanujan, RV
    Huang, Xiao-Yang
    Griffith University Author(s)
    Nguyen, Nam-Trung
    Year published
    2011
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    Abstract
    This paper reports experimental and numerical results of the deformation of a ferrofluid droplet on a superhydrophobic surface under the effect of a uniform magnetic field. A water-based ferrofluid droplet surrounded by immiscible mineral oil was stretched by a magnetic field parallel to the substrate surface. The results show that an increasing flux density increases the droplet width and decreases the droplet height. A numerical model was established to study the equilibrium shape of the ferrofluid droplet. The governing equations for physical fields, including the magnetic field, are solved by the finite volume method. ...
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    This paper reports experimental and numerical results of the deformation of a ferrofluid droplet on a superhydrophobic surface under the effect of a uniform magnetic field. A water-based ferrofluid droplet surrounded by immiscible mineral oil was stretched by a magnetic field parallel to the substrate surface. The results show that an increasing flux density increases the droplet width and decreases the droplet height. A numerical model was established to study the equilibrium shape of the ferrofluid droplet. The governing equations for physical fields, including the magnetic field, are solved by the finite volume method. The interface between the two immiscible liquids was tracked by the level-set method. Nonlinear magnetization was implemented in the model. Comparison between experimental and numerical results shows that the numerical model can predict well the nonlinear deformation of a ferrofluid droplet in a uniform magnetic field.
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    Journal Title
    Langmuir
    Volume
    27
    Issue
    24
    DOI
    https://doi.org/10.1021/la203931q
    Copyright Statement
    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright 2011 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see dx.doi.org/10.1021/la203931q.
    Subject
    Interdisciplinary Engineering not elsewhere classified
    Publication URI
    http://hdl.handle.net/10072/62247
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    • Journal articles

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