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Communication Dans Un Congrès Année : 2021

Wet rolling stones: Growth of a granular aggregate under flow

Résumé

Wet granulation processes can be driven from low to high water content. In this study, we consider the model situation of the growth of a single wet aggregate rolling in a dry granular flow inside a rotating drum. We measure the time evolution of its diameter for different grains and liquids, as well as various rotation rates of the drum. Using X-ray tomography, we are able to characterize the internal structure of the granular aggregate at different times during the process. We show that the growth rate of the aggregate can be related to the transport of the liquid inside the granule and the capture of grains. We propose a model to rationalize the maximum size of the aggregate and its growth rate.
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Dates et versions

hal-03419568 , version 1 (08-11-2021)

Identifiants

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Pierre Jop, Guillaume Saingier, Alban Sauret. Wet rolling stones: Growth of a granular aggregate under flow. Powders & Grains 2021 – 9th International Conference on Micromechanics on Granular Media, Jul 2021, (Virtual), France. pp.09012, ⟨10.1051/epjconf/202124909012⟩. ⟨hal-03419568⟩
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