Labyrinth patterns in confined and tilted granular-fluid systems

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

doi:10.1063/1.3179822

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 proceeding › Conference proceeding contribution › peer-review

2 Citations (Scopus)

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 language	English
Title of host publication	Powders and Grains 2009 - Proceedings of the 6th International Conference on Micromechanics of Granular Media
Pages	1043-1046
Number of pages	4
Volume	1145
DOIs	https://doi.org/10.1063/1.3179822
Publication status	Published - 2009
Event	6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009 - Golden, CO, United States Duration: 13 Jul 2009 → 17 Jul 2009

Other

Other	6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009
Country/Territory	United States
City	Golden, CO
Period	13/07/09 → 17/07/09

Keywords

Granular-fluid system
Instability
Pattern formation

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10.1063/1.3179822

Cite this

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title = "Labyrinth patterns in confined and tilted granular-fluid systems",

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.",

keywords = "Granular-fluid system, Instability, Pattern formation",

author = "Knudsen, {Henning Arendt} and Bj{\o}rnar Sandnes and Flekk{\o}y, {Eirik Grude} and M{\aa}l{\o}y, {K. J.}",

year = "2009",

doi = "10.1063/1.3179822",

language = "English",

isbn = "9780735406827",

volume = "1145",

pages = "1043--1046",

booktitle = "Powders and Grains 2009 - Proceedings of the 6th International Conference on Micromechanics of Granular Media",

note = "6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009 ; Conference date: 13-07-2009 Through 17-07-2009",

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Knudsen, HA, Sandnes, B, Flekkøy, EG & Måløy, KJ 2009, Labyrinth patterns in confined and tilted granular-fluid systems. in Powders and Grains 2009 - Proceedings of the 6th International Conference on Micromechanics of Granular Media. vol. 1145, pp. 1043-1046, 6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009, Golden, CO, United States, 13/07/09. https://doi.org/10.1063/1.3179822

Labyrinth patterns in confined and tilted granular-fluid systems. / Knudsen, Henning Arendt; Sandnes, Bjørnar; Flekkøy, Eirik Grude et al.
Powders and Grains 2009 - Proceedings of the 6th International Conference on Micromechanics of Granular Media. Vol. 1145 2009. p. 1043-1046.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

TY - GEN

T1 - Labyrinth patterns in confined and tilted granular-fluid systems

AU - Knudsen, Henning Arendt

AU - Sandnes, Bjørnar

AU - Flekkøy, Eirik Grude

AU - Måløy, K. J.

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

KW - Granular-fluid system

KW - Instability

KW - Pattern formation

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DO - 10.1063/1.3179822

M3 - Conference proceeding contribution

AN - SCOPUS:70450208771

SN - 9780735406827

VL - 1145

SP - 1043

EP - 1046

BT - Powders and Grains 2009 - Proceedings of the 6th International Conference on Micromechanics of Granular Media

T2 - 6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009

Y2 - 13 July 2009 through 17 July 2009

ER -

Labyrinth patterns in confined and tilted granular-fluid systems

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