Collapse of quasi two dimensional wet granular column
ARTONI ; SANTOMASO ; GABRIELI ; TONO ; COLA
Type de document
ARTICLE A COMITE DE LECTURE REPERTORIE DANS BDI (ACL)
Langue
anglais
Auteur
ARTONI ; SANTOMASO ; GABRIELI ; TONO ; COLA
Résumé / Abstract
This paper deals with the experimental characterization of the collapse of wet granular columns in the pendular state, with the purpose of collecting data on triggering and jamming phenomena in wet granular media. The final deposit shape and the runout dynamics were studied for samples of glass beads, varying particle diameter, liquid surface tension and liquid amount.
We show how the runout distance decreases with increasing water amount (reaching a plateaux for w> 1\%) and increases with increasing Bond number, while the top and toe angles, and the final deposit height increase with increasing water amount and decrease with decreasing Bond number.
Dimensional analysis allowed to discuss possible scalings for the runout length and the top and toe angles: a satisfying scaling was found, based on the combination of Bond number and liquid amount.
Source
Physical review E statistical nonlinear and soft matter physics, num. 3, 9p p.
