Origin of a depth-independent drag force induced by stirring in granular media

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
François GuillardOlivier Pouliquen

Abstract

Experiments have shown that when a horizontal cylinder rotates around the vertical axis in a granular medium, the drag force in the stationary regime becomes independent of the depth, in contradiction with the frictional picture stipulating that the drag should be proportional to the hydrostatic pressure. The goal of this study is to understand the origin of this depth independence of the granular drag. Intensive numerical simulations using the discrete element method are performed giving access to the stress distribution in the packing during the rotation of the cylinder. It is shown that the rotation induces a strong anisotropy in the stress distribution, leading to the formation of arches that screen the hydrostatic pressure in the vicinity of the cylinder and create a bubble of low pressure.

References

Sep 16, 2000·Physical Review Letters·I AlbertP Schiffer
Dec 12, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·L E SilbertS J Plimpton
Dec 12, 2001·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·I AlbertP Schiffer
Jul 13, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Fuping ZhouEric D Wetzel
Dec 17, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·M B StoneP Schiffer
Oct 10, 2006·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Raenell Soller, Stephan A Koehler
Jul 18, 2009·Science·Ryan D MaladenDaniel I Goldman
Sep 28, 2010·Physical Review Letters·Nick GravishDaniel I Goldman
Mar 17, 2011·Physical Review Letters·Yang DingDaniel I Goldman
Mar 17, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·D J CostantinoP Schiffer
Aug 27, 2011·Physical Review Letters·A SeguinJ Crassous
Dec 21, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Baptiste PercierNicolas Taberlet
Mar 23, 2013·Science·Chen LiDaniel I Goldman
Apr 16, 2013·Physical Review Letters·François GuillardOlivier Pouliquen
Jun 19, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Hiroaki Katsuragi, Douglas J Durian

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Citations

Mar 14, 2019·Soft Matter·Yajie FengCaishan Liu
Nov 11, 2017·Bioinspiration & Biomimetics·Emanuela Del DottoreBarbara Mazzolai

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