Origin of Granular Capillarity Revealed by Particle-Based Simulations

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autor(en): Fan F, Ribeiro Parteli EJ, Pöschel T
Zeitschrift: Physical Review Letters
Jahr der Veröffentlichung: 2017
Band: 118
Heftnummer: 21
ISSN: 1079-7114
Sprache: Englisch


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-Autoren / FAU-Herausgeber

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

Zusätzliche Organisationseinheit(en)
Exzellenz-Cluster Engineering of Advanced Materials

Autor(en) der externen Einrichtung(en)
University of Shanghai for Science and Technology (USST)


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

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


Zuletzt aktualisiert 2018-06-08 um 17:08