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Capillary disintegration of a ferrofluid cylindrical film magnetized to saturation by an axial magnetic field

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Abstract

The subject of consideration is a film of a magnetic fluid applied on the surface of a thin magnetically soft cylinder. Quantities figuring in equations and boundary conditions describing the axisymmetric flow due to capillary and magnetic forces at capillary disintegration of the film are estimated in order of magnitude. The effect of magnetization on the capillary disintegration of the film is studied using simplified equations of ferrohydrodynamics. It is shown that magnetization shifts the range of Rayleigh capillary instability toward longer wave modes. As a result, drops arising at the final stage are larger than in the case of the nonmagnetic liquid.

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Authors and Affiliations

  1. Institute of Mechanics, Moscow State University, Leninskie gory, Moscow, 119192, Russia

    V. M. Korovin

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  1. V. M. Korovin
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Correspondence to V. M. Korovin.

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Original Russian Text © V.M. Korovin, 2008, published in Zhurnal Tekhnicheskoĭ Fiziki, 2008, Vol. 78, No. 5, pp. 22–28.

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Korovin, V.M. Capillary disintegration of a ferrofluid cylindrical film magnetized to saturation by an axial magnetic field. Tech. Phys. 53, 554–561 (2008). https://doi.org/10.1134/S1063784208050046

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  • DOI: https://doi.org/10.1134/S1063784208050046

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