Scaling of wet granular flows in a rotating drum

Ahmed Jarray*, Vanessa Magnanimo, Marco Ramaioli, Stefan Luding

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademicpeer-review

22 Citations (Scopus)

Abstract

In this work, we investigate the effect of capillary forces and particle size on wet granular flows and we propose a scaling methodology that ensures the conservation of the bed flow. We validate the scaling law experimentally by using different size glass beads with tunable capillary forces. The latter is obtained using mixtures of ethanol-water as interstitial liquid and by increasing the hydrophobicity of glass beads with an ad-hoc silanization procedure. The scaling methodology in the flow regimes considered (slipping, slumping and rolling) yields similar bed flow for different particle sizes including the angle of repose that normally increases when decreasing the particle size.

Original languageEnglish
Title of host publicationEPJ Web of Conferences
Number of pages4
Volume140
DOIs
Publication statusPublished - 30 Jun 2017
Externally publishedYes
Event8th International Conference on Micromechanics on Granular Media, Powders and Grains 2017 - Montpellier, France
Duration: 3 Jul 20177 Jul 2017

Publication series

NameEPJ Web of Conferences
PublisherEDP Sciences
ISSN (Print)2101-6275

Conference

Conference8th International Conference on Micromechanics on Granular Media, Powders and Grains 2017
CountryFrance
CityMontpellier
Period3/07/177/07/17

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