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Scalings of axisymmetric granular column collapse

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Warnett, Jason M., Denissenko, Petr, Thomas, P. J., Kiraci, Ercihan and Williams, M. A. (2014) Scalings of axisymmetric granular column collapse. Granular Matter, 16 (1). pp. 115-124. doi:10.1007/s10035-013-0469-x ISSN 1434-5021.

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Official URL: http://dx.doi.org/10.1007/s10035-013-0469-x

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Abstract

Experimental investigations into the collapse of granular columns are presented with dimensional results of the final deposit obtained using a 3D laser scanner. The high accuracy measurement method has found that the final pile radius is not only dependent on the aspect ratio of the initial geometry as previously thought, but also the initial column radius and hence the ratio of column radius to particle diameter. This was also observed to be true for the angle at the base of the deposit. Theoretical considerations coupled with obtained data have allowed the angle at summit for aspect ratios less than approximately 3 to be described entirely in terms of material parameters and aspect ratio—something desired for all length scalings but seemingly unobtainable due to the dynamic nature of the collapse. With the method being non intrusive, measurement of the summital radius was also made possible. The final height showed a dependence predominantly with aspect ratio in agreement with previous authors.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title: Granular Matter
Publisher: Springer
ISSN: 1434-5021
Official Date: February 2014
Dates:
DateEvent
February 2014Published
7 December 2013Available
4 March 2013Submitted
Volume: 16
Number: 1
Page Range: pp. 115-124
DOI: 10.1007/s10035-013-0469-x
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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