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Updated: Jun 3, 2026

Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
Effects of nonmagnetic interparticle forces on magnetorheological fluids
D J Klingenberg1, C H Olk, M A Golden
1Chemical and Biological Engineering Department and Rheology Research Center, University of Wisconsin, Madison, WI 53706, USA. klingen@engr.wisc.edu
Abstract:
Effects of nonmagnetic interparticle forces on the on- and off-state behavior of magnetorheological fluids are investigated experimentally and with particle-level simulations. Suspensions of iron particles in an aliphatic oil are modified by surface-active species. The modifications significantly alter the off-state properties, but have little impact on the field-induced stresses. Simulations show similar behavior. Off-state rheological properties are strongly influenced by van der Waals forces and modifications of the short-range repulsive forces. Field-induced stresses are less sensitive to the nonmagnetic forces.
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