NDLI: Segregation and stability of a binary granular heap

Content Provider	Springer Nature Link
Author	Swartz, A. G. Kalmbach, J. B. Olson, J. Zieve, R. J.
Copyright Year	2009
Abstract	We measure stability of two-dimensional granular mixtures in a rotating drum and relate grain configurations to stability. We use two types of grains which differ in both size and shape, with the larger grains reaching a larger average angle before an avalanche. In our mixtures, the smaller grains cluster near the center of the drum, while the larger grains remain near the outer edge, a pattern suggesting that grain size rather than avalanche angle determines the segregation behavior. One consequence of the size segregation is that the smaller grains heavily influence the stability of the heap. We find that the maximum angle of stability is a non-linear function of composition, changing particularly rapidly when small grains are first added to a homogeneous pile of large grains. We conclude that the grain configuration within the central portion of the heap plays a prominent role in stability.
Starting Page	185
Ending Page	191
Page Count	7
File Format	PDF
ISSN	14345021
Journal	Granular Matter
Volume Number	11
Issue Number	3
e-ISSN	14347636
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-04-09
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rotating drum Static sandpile Avalanches Segregation Grain shape Engineering Thermodynamics, Heat and Mass Transfer Industrial Chemistry/Chemical Engineering Geoengineering, Foundations, Hydraulics Materials Science Engineering Fluid Dynamics Granular Media
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mechanics of Materials Materials Science

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