Granular drag on a discrete object: Shape effects on jamming

I. Albert; J. G. Sample; A. J. Morss; S. Rajagopalan; A. L. Barabási; P. Schiffer

doi:10.1103/PhysRevE.64.061303

Granular drag on a discrete object: Shape effects on jamming

I. Albert, J. G. Sample, A. J. Morss, S. Rajagopalan, A. L. Barabási, P. Schiffer

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We study the drag force on discrete objects with circular cross section moving slowly through a spherical granular medium. Variations in the geometry of the dragged object change the drag force only by a small fraction relative to shape effects in fluid drag. The drag force depends quadratically on the object’s diameter as expected. We do observe, however, a deviation above the expected linear depth dependence, and the magnitude of the deviation is apparently controlled by geometrical factors.

Original language	English (US)
Pages (from-to)	4
Number of pages	1
Journal	Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Volume	64
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevE.64.061303
State	Published - 2001

All Science Journal Classification (ASJC) codes

Statistical and Nonlinear Physics
Statistics and Probability
Condensed Matter Physics

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10.1103/PhysRevE.64.061303

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AU - Barabási, A. L.

AU - Schiffer, P.

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AB - We study the drag force on discrete objects with circular cross section moving slowly through a spherical granular medium. Variations in the geometry of the dragged object change the drag force only by a small fraction relative to shape effects in fluid drag. The drag force depends quadratically on the object’s diameter as expected. We do observe, however, a deviation above the expected linear depth dependence, and the magnitude of the deviation is apparently controlled by geometrical factors.

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ER -

Granular drag on a discrete object: Shape effects on jamming

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