NDLI: Particle dynamics in dense shear granular flow

Content Provider	Springer Nature Link
Author	Wang, Dengming Zhou, Youhe
Copyright Year	2009
Abstract	The particle dynamics in an annular shear granular flow is studied using the discrete element method, and the influences of packing fraction, shear rate and friction coefficient are analyzed. We demonstrate the existence of a critical packing fraction exists in the shear granular flow. When the packing fraction is lower than this critical value, the mean tangential velocity profile exhibits a rate-independent feature. However, when the packing fraction exceeds this critical value, the tangential velocity profile becomes rate-dependent and varies gradually from linear to nonlinear with increasing shear rate. Furthermore, we find a continuous transition from the unjammed state to the jammed state in a shear granular flow as the packing fraction increases. In this transforming process, the force distribution varies distinctly and the contact force network also exhibits different features.
Starting Page	91
Ending Page	100
Page Count	10
File Format	PDF
ISSN	05677718
Journal	Acta Mechanica Sinica
Volume Number	26
Issue Number	1
e-ISSN	16143116
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-12-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Shear granular flow Tangential velocity profile Critical packing fraction Force distribution Jammed state Computational Intelligence Engineering Fluid Dynamics Classical Continuum Physics Theoretical and Applied Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanical Engineering Computational Mechanics

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