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arXiv · 1611.06588

Drift of suspended ferromagnetic particles due to the Magnus effect

S. I. Denisov·B. O. Pedchenko
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Abstract

A minimal system of equations is introduced and applied to study the drift motion of ferromagnetic particles suspended in a viscous fluid and subjected to a time-periodic driving force and a nonuniformly rotating magnetic field. It is demonstrated that the synchronized translational and rotational oscillations of these particles are accompanied by their drift in a preferred direction, which occurs under the action of the Magnus force. We calculate both analytically and numerically the drift velocity of particles characterized by single-domain cores and nonmagnetic shells and show that there are two types of drift, unidirectional and bidirectional, which can be realized in suspensions composed of particles with different core-shell ratios. The possibility of using the effect of bidirectional drift for the separation of core-shell particles in suspensions is also discussed.

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S. I. Denisov, B. O. Pedchenko. 2016-11-20. Drift of suspended ferromagnetic particles due to the Magnus effect. https://doi.org/10.1063/1.4975031

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