Discharge of a 2D magnetic silo
Thorens Louison, Viallet Maud, Måløy Knut Jørgen and 2 more
EPJ Web of Conferences · 2021
doi:10.1051/epjconf/202124903017 (opens in a new tab)
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Abstract
We investigate experimentally the discharge of a 2D-silo, a Hele-Shaw cell, filled with a mono layer of ferromagnetic grains submitted to an external magnetic field B perpendicular to the cell plane. In this case the magnetic pair interactions are repulsive. We show that the granular flow rate decreases systematically with the amplitude of the external magnetic field applied. Interestingly, while the output flow rate remains constant during an experiment, we reveal very large spatio-temporal fluctuations of the packing density within the cell, particularly evident for magnetic field of high amplitudes.
Abstract licence: CC BY
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