Long lasting instabilities in granular mixtures
软凝聚态物质
2009-11-10 v1 无序系统与神经网络
摘要
We have performed experiments of axial segregation in the Oyama's drum. We have tested binary granular mixtures during very long times. The segregation patterns have been captured by a CCD camera and spatio-temporal graphs are created. We report the occurence of instabilities which can last several hours. We stress that those instabilities originate from the competition between axial and radial segregations. We put into evidence the occurence of giant fluctuations in the fraction of grain species along the surface during the unstable periods.
引用
@article{arxiv.cond-mat/0303335,
title = {Long lasting instabilities in granular mixtures},
author = {H. Caps and R. Michel and N. Lecocq and N. Vandewalle},
journal= {arXiv preprint arXiv:cond-mat/0303335},
year = {2009}
}
备注
10 pages, 10 figures, (2002)