On the effective viscosity of magnetic colloids in a uniform magnetic field

Peter J. Stiles*, Michael Kagan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The drag force on a macroscopic sphere falling slowly through an unbounded ferromagnetic colloid in a uniform external magnetic field has been analyzed using magnetohydrodynamic equations derived by Shliomis. A magnetic-field-dependent shear viscosity is introduced to express the drag force in Stokes form. The apparent viscosity of the magnetized colloid obtained from the falling ball experiment is predicted to be slightly larger than the corresponding result obtained by Shliomis for capillary flow.

Original languageEnglish
Pages (from-to)87-93
Number of pages7
JournalJournal of Colloid and Interface Science
Volume117
Issue number1
DOIs
Publication statusPublished - 1987

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