中国物理B ›› 2024, Vol. 33 ›› Issue (4): 44502-044502.doi: 10.1088/1674-1056/ad1092
Effect of granular shape on radial segregation in a two-dimensional drum
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,†
- 1 School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
2 School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China;
3 State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;
4 College of Medical Instruments, Shanghai University of Medicine and Health Sciences, Shanghai 201318, China
Effect of granular shape on radial segregation in a two-dimensional drum
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,†
- 1 School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
2 School of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255049, China;
3 State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;
4 College of Medical Instruments, Shanghai University of Medicine and Health Sciences, Shanghai 201318, China
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)
- 45.70.-n