Origin of Granular Capillarity Revealed by Particle-Based Simulations

Journal article
(Original article)


Publication Details

Author(s): Fan F, Ribeiro Parteli EJ, Pöschel T
Journal: Physical Review Letters
Publication year: 2017
Volume: 118
Journal issue: 21
ISSN: 1079-7114
Language: English


Abstract


When a thin tube is dipped into water, the water will ascend to a certain height, against the action of gravity. While this effect, termed capillarity, is well known, recent experiments have shown that agitated granular matter reveals a similar behavior. Namely, when a vertical tube is inserted into a container filled with granular material and is then set into vertical vibration, the particles rise up along the tube. In the present Letter, we investigate the effect of granular capillarity by means of numerical simulations and show that the effect is caused by convection of the granular material in the container. Moreover, we identify two regimes of behavior for the capillary height Hc depending on the tube-to-particle-diameter ratio, D/d. For large D/d, a scaling of Hc with the inverse of the tube diameter, which is reminiscent of liquids, is observed. However, when D/d decreases down to values smaller than a few particle sizes, a uniquely granular behavior is observed where Hc increases linearly with the tube diameter.



FAU Authors / FAU Editors

Pöschel, Thorsten Prof. Dr.
Lehrstuhl für Multiscale Simulation of Particulate Systems
Ribeiro Parteli, Eric Josef Dr.
Lehrstuhl für Multiscale Simulation of Particulate Systems


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions
University of Shanghai for Science and Technology (USST)


How to cite

APA:
Fan, F., Ribeiro Parteli, E.J., & Pöschel, T. (2017). Origin of Granular Capillarity Revealed by Particle-Based Simulations. Physical Review Letters, 118(21). https://dx.doi.org/10.1103/PhysRevLett.118.218001

MLA:
Fan, Fengxian, Eric Josef Ribeiro Parteli, and Thorsten Pöschel. "Origin of Granular Capillarity Revealed by Particle-Based Simulations." Physical Review Letters 118.21 (2017).

BibTeX: 

Last updated on 2018-06-08 at 17:08