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Communication Dans Un Congrès Année : 2021

Shear-driven density segregation: an experimental study

Résumé

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.

Dates et versions

hal-04350524 , version 1 (18-12-2023)

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Monica Tirapelle, Andrea Santomaso, Patrick Richard, Riccardo Artoni. Shear-driven density segregation: an experimental study. Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media, Jul 2021, Virtual conference, Argentina. pp.03021, ⟨10.1051/epjconf/202124903021⟩. ⟨hal-04350524⟩
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