Movement of a ferrofluid in a square cross-section toroid under the influence of rotating magnetic fields
DOI:
https://doi.org/10.15665/rp.v18i2.2216Abstract
Abstract: This article includes the main experimental results related to the axial flow of a ferrofluid due to rotating magnetic fields and confined in a square cross-sectional toroidal circuit. The prototype includes four pairs of orthogonal coils that surround portions of the equispaced toroidal circuit. Induced magnetic fields establish a rotating spatial field wave at the volume configured by each pair of orthogonal coils, powered by offset currents 90° electric. This wave, in turn, develops a magnetic torque over the magnetite nanoparticles, and is believed to be responsible for the axial-circular movement of the nanofluid along the toroidal vessel. Ferrofluid experiments were conducted at three concentrations of magnetite. For each case, different magnetic field densities were applied. It was possible to know the voltage and current values for which there is a greater longitudinal movement. In addition, this system was simulated using commercial software to estimate the magnetic field densities, which were then tested against the measurements of a probe. It was observed that this movement can be described using its analogy with a single-phase induction electric motor. The basic difference with its electrical analogue is that the rotor in this case, is a fluid with magnetic properties and not a compact solid
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Copyright (c) 2020 Rodrigo Correa, Ludwing Ludwing Gómez, Hermann Vargas
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