中国物理B ›› 2024, Vol. 33 ›› Issue (4): 44502-044502.doi: 10.1088/1674-1056/ad1092
Yue Xu(徐悦)1, Ran Li(李然)1, Zhipeng Chi(迟志鹏)1, Wenzheng Xiu(修文正)2, Qicheng Sun(孙其诚)3, and Hui Yang(杨晖)4,1,†
Yue Xu(徐悦)1, Ran Li(李然)1, Zhipeng Chi(迟志鹏)1, Wenzheng Xiu(修文正)2, Qicheng Sun(孙其诚)3, and Hui Yang(杨晖)4,1,†
摘要: Granular segregation is widely observed in nature and industry. Most research has focused on segregation caused by differences in the size and density of spherical grains. However, due to the fact that grains typically have different shapes, the focus is shifting towards shape segregation. In this study, experiments are conducted by mixing cubic and spherical grains. The results indicate that spherical grains gather at the center and cubic grains are distributed around them, and the degree of segregation is low. Through experiments, a structured analysis of local regions is conducted to explain the inability to form stable segregation patterns with obviously different geometric shapes. Further, through simulations, the reasons for the central and peripheral distributions are explained by comparing velocities and the number of collisions of the grains in the flow layer.
中图分类号: (Granular systems)