Granular Segregation Mechanisms by Cyclic Shear
Soft Condensed Matter
2020-09-18 v1
Abstract
We present an X-ray tomography study of the segregation mechanisms of tracer particles in a three-dimensional cyclically sheared bi-disperse granular medium. Big tracers are dragged by convection to rise to the top surface and then remain trapped there due to the small downward convection cross-section, which leads to segregation. Additionally, we also find that the local structural up-down asymmetry due to arching effect around big tracers will induce the tracers to have a net upward displacement against its smaller neighbors, which is another mechanism for segregation.
Cite
@article{arxiv.2009.08031,
title = {Granular Segregation Mechanisms by Cyclic Shear},
author = {Zhifeng Li and Zhikun Zeng and Yi Xing and Jindong Li and Jie Zheng and Qinghao Mao and Jie Zhang and Meiying Hou and Yujie Wang},
journal= {arXiv preprint arXiv:2009.08031},
year = {2020}
}
Comments
24 pages, 5 figures