Liquid migration in sheared unsaturated granular media
Liquid migration in sheared unsaturated granular media
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DOI：
10.1007/s10035-012-0387-3
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发表时间：
2012-06
期刊：
影响因子：
2.4
通讯作者：
Roman Mani;D. Kadau;H. Herrmann
中科院分区：
文献类型：
--
作者：
Roman Mani;D. Kadau;H. Herrmann
我们使用毛细管桥的颗粒尺度模型展示了液体如何在剪切的非饱和颗粒介质中迁移。在单个毛细管桥断裂后，液体被重新分配到邻近的接触处，导致液体在大范围内重新分配。液体分布的演变与最近发展的关于剪切带中液体迁移的连续介质描述相吻合。研究了与液体运移有关的速度分布以及干湿颗粒介质的密度分布。
We show how liquid migrates in sheared unsaturated granular media using a grain scale model for capillary bridges. Liquid is redistributed to neighboring contacts after rupture of individual capillary bridges leading to redistribution of liquid on large scales. The liquid profile evolution coincides with a recently developed continuum description for liquid migration in shear bands. The velocity profiles which are linked to the migration of liquid as well as the density profiles of wet and dry granular media are studied.