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Chin. Phys. B, 2024, Vol. 33(4): 044502    DOI: 10.1088/1674-1056/ad1092
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

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
Abstract  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.
Keywords:  granular materials      cubic grains      shape segregation      segregation mechanism  
Received:  20 September 2023      Revised:  11 November 2023      Accepted manuscript online:  29 November 2023
PACS:  45.70.-n (Granular systems)  
  45.70.Mg (Granular flow: mixing, segregation and stratification)  
  47.57.Gc (Granular flow)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 12072200 and 12372384).
Corresponding Authors:  Hui Yang     E-mail:  yangh_23@sumhs.edu.cn

Cite this article: 

Yue Xu(徐悦), Ran Li(李然), Zhipeng Chi(迟志鹏), Wenzheng Xiu(修文正), Qicheng Sun(孙其诚), and Hui Yang(杨晖) Effect of granular shape on radial segregation in a two-dimensional drum 2024 Chin. Phys. B 33 044502

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