https://doi.org/10.1051/epjconf/202124903021
Shear-driven density segregation: an experimental study
1
APTLab - Advanced Particle Technology Laboratory, Department of Industrial Engineering, University of Padova, Italy
2
MAST-GPEM, University Gustave Eiffel, IFSTTAR, F-44344 Bouguenais, France
* Corresponding author: andrea.santomaso@unipd.it
Published online: 7 June 2021
Granular materials can segregate spontaneously due to differences in particle properties when subjected to vibrations, shear strain or because of the equipment geometries. Although the difference in particle size is the most critical factor that drives segregation, the effects of large density difference may also be detrimental for a lot of industries. In this work, we experimentally investigate density-driven segregation in bi-disperse mixtures of particles having the same size but different density when subjected to non-uniform shear rates. We found that the features of the segregation process are related to the density ratio as well as to the dimensionless loaded mass. The experimental outcomes are then compared with the solution of a simple density-driven segregation model. The model can successfully capture the main features of segregation driven by density for a range of density ratios.
A video is available at https://doi.org/10.48448/aae5-9m67
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
