Pattern formation of frictional fingers in a gravitational potential - Archive ouverte HAL Access content directly
Journal Articles Physical Review Fluids Year : 2018

Pattern formation of frictional fingers in a gravitational potential

Abstract

Aligned finger structures, with a characteristic width, emerge during the slow drainage of a liquid-granular mixture in a tilted Hele-Shaw cell. A transition from vertical to horizontal alignment of the finger structures is observed as the tilting angle and the granular density are varied.An analytical model is presented, demonstrating that the alignment properties are the result of the competition between fluctuating granular stresses and the hydrostatic pressure. The dynamics is reproduced in simulations.We also show how the system explains patterns observed in nature, created during the early stages of a dike formation.
Fichier principal
Vignette du fichier
2018-JonAlmEriksen-PRFluids-preprint-pattern-formation-frictional(6).pdf (8.86 Mo) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01685526 , version 1 (16-01-2018)

Identifiers

Cite

Jon Alm Eriksen, Renaud Toussaint, Knut Jørgen Måløy, Eirik G. Flekkøy, Olivier Galland, et al.. Pattern formation of frictional fingers in a gravitational potential. Physical Review Fluids, 2018, 3 (1), pp.013801. ⟨10.1103/PhysRevFluids.3.013801⟩. ⟨hal-01685526⟩
101 View
87 Download

Altmetric

Share

Gmail Facebook X LinkedIn More