S shape of a granular pile in a rotating drum.
S shape of a granular pile in a rotating drum.
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旋转滚筒中的 S 形颗粒堆。
DOI：
10.1103/physreve.73.050301
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
E. Hinch
中科院分区：
文献类型：
--
作者：
N. Taberlet;P. Richard;E. Hinch
研究了旋转转鼓中颗粒堆的形状。用离散元方法(DEM)模拟表明，在高转速下得到的“S形状”可以用端板上的摩擦来解释。建立了考虑端板影响的理论模型，导出了自由面形状方程。该模型揭示了一个无量纲数，它量化了端板对桩的形状的影响。最后，讨论了系统的标度律，数值结果支持了我们的结论。
The shape of a granular pile in a rotating drum is investigated. Using discrete elements method (DEM) simulations we show that the "S shape" obtained for high rotation speed can be accounted for by the friction on the end plates. A theoretical model which accounts for the effect of the end plates is presented and the equation of the shape of the free surface is derived. The model reveals a dimensionless number which quantifies the influence of the end plates on the shape of the pile. Finally, the scaling laws of the system are discussed and numerical results support our conclusions.