https://doi.org/10.1051/epjap/2024025
Original Article
Falling magnetizable bead in a Newtonian fluid
Université de Lorraine, CNRS, LEMTA, Nancy, France
* e-mail: stephane.dufour@univ-lorraine.fr
a Present address: LEMTA-ENSEM, 2 Avenue de la Forêt de Haye, BP 90161, 54505 Vandoeuvre-lès-Nancy cedex, France.
Received:
18
July
2024
Accepted:
22
November
2024
Published online: 9 January 2025
The use of magnetic fields allows to modify the trajectory of magnetizable particles in a fluid. If a ring magnet is centered on the cylinder containing the fluid, it enhances the dynamics of a falling ball, and an equilibrium position is found. To compute the particle dynamics, the magnetic force should be found accurately: a method based on virtual works allows to obtain the force as well as the stiffness matrix, to gain accuracy. The computed trajectories are compared to the experimental ones for Newtonian fluids at first, and extended to viscoplastic fluids.
Key words: Electromechanical effects / particle dynamics / newtonian fluids / yield-stress fluids
© M.F. De Andrade Paschoal et al., Published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
