Exactly solvable model for drift of suspended ferromagnetic particles induced by the Magnus force

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:443

Article

Denisov, S. I.¹  Pedchenko, B. O.¹  Kvasnina, O. V.¹  Denisova, E. S.¹ 

[1] Sumy State Univ, Rimsky Korsakov St 2, UA-40007 Sumy, Ukraine

关键词: Dilute suspensions;    Single-domain particles;    Magnus force;    Drift velocity;    Particle separation;   

DOI  :  10.1016/j.jmmm.2017.07.051

来源: Elsevier

【 摘 要 】

The phenomenon of drift motion of single-domain ferromagnetic particles induced by the Magnus force in a viscous fluid is studied analytically. We use a minimal set of equations to describe the translational and rotational motions of these particles subjected to a harmonic force and a non-uniformly rotating magnetic field. Assuming that the azimuthal angle of the magnetic field is a periodic triangular function, we analytically solve the rotational equation of motion in the steady state and calculate the drift velocity of particles. We study in detail the dependence of this velocity on the model parameters, discuss the applicability of the drift phenomenon for separation of particles in suspensions, and verify numerically the analytical predictions. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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