Rapaport D C
Physics Department, Bar-Ilan University, Ramat-Gan 52900, Israel.
Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Oct;76(4 Pt 1):041302. doi: 10.1103/PhysRevE.76.041302. Epub 2007 Oct 19.
Discrete particle simulations are used to model segregation in granular mixtures of three different particle species in a horizontal rotating drum. Axial band formation is observed, with medium-size particles tending to be located between alternating bands of big and small particles. Partial radial segregation also appears; it precedes the axial segregation and is characterized by an inner core region richer in small particles. Axial bands are seen to merge during the long simulation runs, leading to a coarsening of the band pattern; the relocation of particles involved in one such merging event is examined. Overall, the behavior is similar to experiment and represents a generalization of what occurs in the simpler two-component mixture.
离散粒子模拟用于对水平旋转鼓中三种不同粒子种类的颗粒混合物的分离进行建模。观察到轴向带的形成，中等尺寸的粒子倾向于位于大粒子和小粒子交替带之间。部分径向分离也会出现；它先于轴向分离，其特征是内核区域中小粒子含量更高。在长时间的模拟运行中，可以看到轴向带合并，导致带图案变粗；研究了参与一次此类合并事件的粒子的重新分布。总体而言，该行为与实验相似，代表了在更简单的两组分混合物中发生情况的一种推广。
