Collapse of quasi-two-dimensional wet granular columns

被引：49

作者：

Artoni, Riccardo ^{[1
]}

Santomaso, Andrea C. ^{[1
]}

Gabrieli, Fabio ^{[2
]}

Tono, Diego ^{[2
]}

Cola, Simonetta ^{[2
]}

机构：

[1] Univ Padua, Dipartimento Ingn Ind, I-35131 Padua, Italy

[2] Univ Padua, Dipartimento Ingn Civile Edile & Ambientale, I-35131 Padua, Italy

来源：

PHYSICAL REVIEW E | 2013年 / 87卷 / 03期

关键词：

SIMULATIONS; MODEL; MASS;

D O I：

10.1103/PhysRevE.87.032205

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

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 plateau 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. DOI: 10.1103/PhysRevE.87.032205

引用

页数：8

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