Fundamental characteristics of granular flow under variable g-levels

Richard M Lueptow; Tim Arndt; Antje Brucks; Julio M Ottino

doi:10.1061/40830(188)52

Fundamental characteristics of granular flow under variable g-levels

Richard M Lueptow^*, Tim Arndt, Antje Brucks, Julio M Ottino

^*Corresponding author for this work

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

Abstract

Our understanding of gravity-driven granular flows is based almost exclusively on experiments under Earth's gravity. Here we show that the dynamic angle of repose, or slope, of the flowing shear layer in the canonical case of granular flow in a tumbler of radius r rotating at ω is properly characterized by the Froude number, Fr = ω² r/g, when the acceleration g is varied over a wide range in a large centrifuge. Creeping motion of the subsurface flow is also affected by the g-level. Copyright ASCE 2006.

Original language	English (US)
Title of host publication	Earth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments
Number of pages	1
Volume	2006
DOIs	https://doi.org/10.1061/40830(188)52
State	Published - Dec 28 2006
Event	Earth and Space 2006 - 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments - League City/Houston, TX, United States Duration: Mar 5 2006 → Mar 8 2006

Other

Other	Earth and Space 2006 - 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments
Country/Territory	United States
City	League City/Houston, TX
Period	3/5/06 → 3/8/06

ASJC Scopus subject areas

Engineering(all)

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10.1061/40830(188)52

Cite this

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title = "Fundamental characteristics of granular flow under variable g-levels",

abstract = "Our understanding of gravity-driven granular flows is based almost exclusively on experiments under Earth's gravity. Here we show that the dynamic angle of repose, or slope, of the flowing shear layer in the canonical case of granular flow in a tumbler of radius r rotating at ω is properly characterized by the Froude number, Fr = ω2 r/g, when the acceleration g is varied over a wide range in a large centrifuge. Creeping motion of the subsurface flow is also affected by the g-level. Copyright ASCE 2006.",

author = "Lueptow, {Richard M} and Tim Arndt and Antje Brucks and Ottino, {Julio M}",

year = "2006",

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booktitle = "Earth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments",

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Lueptow, RM, Arndt, T, Brucks, A & Ottino, JM 2006, Fundamental characteristics of granular flow under variable g-levels. in Earth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments. vol. 2006, Earth and Space 2006 - 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments, League City/Houston, TX, United States, 3/5/06. https://doi.org/10.1061/40830(188)52

Fundamental characteristics of granular flow under variable g-levels. / Lueptow, Richard M; Arndt, Tim; Brucks, Antje et al.

Earth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments. Vol. 2006 2006.

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

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AU - Arndt, Tim

AU - Brucks, Antje

AU - Ottino, Julio M

PY - 2006/12/28

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N2 - Our understanding of gravity-driven granular flows is based almost exclusively on experiments under Earth's gravity. Here we show that the dynamic angle of repose, or slope, of the flowing shear layer in the canonical case of granular flow in a tumbler of radius r rotating at ω is properly characterized by the Froude number, Fr = ω2 r/g, when the acceleration g is varied over a wide range in a large centrifuge. Creeping motion of the subsurface flow is also affected by the g-level. Copyright ASCE 2006.

AB - Our understanding of gravity-driven granular flows is based almost exclusively on experiments under Earth's gravity. Here we show that the dynamic angle of repose, or slope, of the flowing shear layer in the canonical case of granular flow in a tumbler of radius r rotating at ω is properly characterized by the Froude number, Fr = ω2 r/g, when the acceleration g is varied over a wide range in a large centrifuge. Creeping motion of the subsurface flow is also affected by the g-level. Copyright ASCE 2006.

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BT - Earth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments

T2 - Earth and Space 2006 - 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments

Y2 - 5 March 2006 through 8 March 2006

ER -

Fundamental characteristics of granular flow under variable g-levels

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