Abstract
The viscosity of magnetic fluids consisting of iron oxide nanoparticles, water, and glycerol has been studied under the conditions of a rotational flow in the presence and absence of a magnetic field. The magnetic field increases the fluid viscosity by 20–80 times. The concentration dependence of the relative viscosity on the magnetic field is described by a curve passing through a maximum. The magnetic field with the lines oriented perpendicularly to the rotor-rotation axis increases the viscosity of the fluid much more strongly than it does with the lines parallel to the rotor-rotation axis.
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Acknowledgment
This work was supported by the Russian Foundation for Basic Research, project no. 12_08_00381_a.
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Vshivkov, S.A., Rusinova, E.V. & Galyas, A.G. Effect of a magnetic field on the rheological properties of iron oxide–water–glycerol system. Rheol Acta 55, 155–161 (2016). https://doi.org/10.1007/s00397-016-0909-8
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DOI: https://doi.org/10.1007/s00397-016-0909-8