Frictional torque on a sphere rotating in a uniformly magnetized ferrofluid

Peter J. Stiles*, Michael Kagan, Joseph B. Hubbard

*Corresponding author for this work

    Research output: Contribution to journalLetterpeer-review

    1 Citation (Scopus)

    Abstract

    We analyze the frictional torque experienced by a macroscopic sphere rotating steadily in a uniformly magnetized magnetic colloid. The magnetoviscous increment in the apparent shear viscosity is predicted to be some five times smaller than the corresponding increment when the sphere translates through the colloidal suspension. In each case the external magnetic field is parallel to the angular or linear velocity of the sphere.

    Original languageEnglish
    Pages (from-to)591-592
    Number of pages2
    JournalJournal of Colloid and Interface Science
    Volume117
    Issue number2
    DOIs
    Publication statusPublished - 1987

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