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Title:
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Nonlinear deformation of a ferrofluid droplet in a uniform magnetic field.
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Author:
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Zhu, Guiping.; Nguyen, Nam-Trung.; Ramanujan, R. V.; Huang, Xiaoyang.
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Copyright year:
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2011 |
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Abstract:
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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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Subject:
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DRNTU::Engineering::Mechanical engineering. |
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Type:
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Journal Article |
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Series/ Journal Title:
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Langmuir |
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School:
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School of Mechanical and Aerospace Engineering |
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Rights:
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© 2011 American Chemical Society. This is the author created version of a work that has been peer reviewed and accepted for publication by Langmuir, American Chemical Society. 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: [DOI: http://dx.doi.org/10.1021/la203931q]. |
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Version:
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Accepted version |
