ROTATION OF A MAGNETORHEOLOGIC SUSPENSION IN A CONSTANT MAGNETIC FIELD. I. EQUATION OF MOTION AND BOUNDARY CONDITIONS AT THE FREE SURFACE.

Z. P. Shul'man, E. A. Zal'tsgendler, Boris Khusid

Research output: Contribution to journalArticlepeer-review

Abstract

Numerous experimental and theoretical results have been presently obtained on the effect of magnetic fields on hydrodynamic flow characteristics of noncolloidal magnetorheologic suspensions (MRS) with a reconstructed external field structure. A number of interesting effects, related to particle rotation, was observed in numerous studies, devoted to the effect of a rotating magnetic field on the hydrodynamics of colloidal magnetic fluids (MF). In particular, the possibility was shown of exciting a hydrodynamic flow by a uniform rotating magnetic field. The basic physical mechanism of the magnetic-field effect on the motion of the medium is the appearance of an internal torque, generated by the nonparallel vectors of magnetization and field intensity. For an MF these problems have been solved in the one-dimensional statement: in the unbounded sizes by a cylindrical vessel, and in the gap between two neighboring cylinders. The MRS specifics lead to further complications in analyzing its behavior in magnetic fields. This is related to the field effect on the microstructure of the medium, and to the reciprocal effect of the microstructure on the field characteristics inside the MRS. In the present study all these factors are included in investigating the dynamic behavior of MRS in rotating magnetic fields.

Original languageEnglish (US)
Pages (from-to)191-196
Number of pages6
JournalMagnetohydrodynamics New York, N.Y.
Volume23
Issue number2
StatePublished - Apr 1 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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