Title

Controlling Fingering Instabilities in Rotating Ferrofluids

Document Type

Article

Publication Date

1-2003

Department

Physics

Language

English

Publication Title

Physical Review E

Abstract

We perform a detailed analytic and numerical study of the evolution of a ferrofluid drop confined to a rotating Hele-Shaw cell in the presence of an azimuthal magnetic field. Our results demonstrate that the centrifugally driven interfacial instabilities can be simply controlled with the use of a current-carrying wire. We compare an analytic linear analysis to our computational results and show that a number of observed features cannot be explained by linear theory alone, including a “diamond ring” instability that results when a droplet is nearly stabilized.

Comments

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DOI

10.1103/PhysRevE.67.017301

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