Building designed granular towers one drop at a time

Authors

Julien Chopin, Clark University
Arshad Kudrolli, Clark UniversityFollow

Document Type

Article

Abstract

A dense granular suspension dripping on an imbibing surface is observed to give rise to slender mechanically stable structures that we call granular towers. Successive drops of grain-liquid mixtures are shown to solidify rapidly upon contact with a liquid absorbing substrate. A balance of excess liquid flux and drainage rate is found to capture the typical growth and height of the towers. The tower width is captured by the Weber number, which gives the relative importance of inertia and capillary forces. Various symmetric, smooth, corrugated, zigzag, and chiral structures are observed by varying the impact velocity and the flux rate from droplet to jetting regime. © 2011 American Physical Society.

Publication Title

Physical Review Letters

Publication Date

11-9-2011

Volume

107

Issue

20

ISSN

0031-9007

DOI

10.1103/PhysRevLett.107.208304

Repository Citation

Chopin, Julien and Kudrolli, Arshad, "Building designed granular towers one drop at a time" (2011). Physics. 116.
https://commons.clarku.edu/faculty_physics/116