Labyrinth patterns in confined and tilted granular-fluid systems

Henning Arendt Knudsen, Bjørnar Sandnes, Eirik Grude Flekkøy, K. J. Måløy

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

Abstract

Random labyrinthine patterns have been shown to emerge during slow drainage of granular-fluid systems in twodimensional confinement. We investigate this process under the influence of a gravitational field; that is to say in a tilted system. The isotropy of the labyrinthine pattern is broken. Instead the system is drained from one side, and a front is identified and studied. The front width varies with tilt angle and volume fraction of grains. Furthermore, the pattern is, based on appearance, found to fall into different categories: aligned with gravitation, random on a short scale, or transverse to gravitation. We propose a parameter to quantify the pattern appearance.

Original languageEnglish
Title of host publicationPowders and Grains 2009 - Proceedings of the 6th International Conference on Micromechanics of Granular Media
Pages1043-1046
Number of pages4
Volume1145
DOIs
Publication statusPublished - 2009
Event6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009 - Golden, CO, United States
Duration: 13 Jul 200917 Jul 2009

Other

Other6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009
CountryUnited States
CityGolden, CO
Period13/07/0917/07/09

Keywords

  • Granular-fluid system
  • Instability
  • Pattern formation

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