Applied Mathematics and Mechanics (English Edition) ›› 2014, Vol. 35 ›› Issue (12): 1565-1572.doi: https://doi.org/10.1007/s10483-014-1886-6

• • 上一篇    下一篇

Packing induced bistable phenomenon in granular flow: analysis from complex network perspective

胡茂彬, 刘启一, 孙王平, 姜锐, 吴清松   

  1. School of Engineering Science, University of Science and Technology of China, Hefei 230026, P. R. China
  • 收稿日期:2014-01-16 修回日期:2014-05-21 出版日期:2014-12-01 发布日期:2014-12-01
  • 通讯作者: Mao-bin HU, Associate Professor, Ph.D., E-mail: humaobin@ustc.edu.cn E-mail:humaobin@ustc.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Nos.11034010 and 71171185)

Packing induced bistable phenomenon in granular flow: analysis from complex network perspective

Mao-bin HU, Qi-yi LIU, Wang-ping SUN, Rui JIANG, Qing-song WU   

  1. School of Engineering Science, University of Science and Technology of China, Hefei 230026, P. R. China
  • Received:2014-01-16 Revised:2014-05-21 Online:2014-12-01 Published:2014-12-01
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Nos.11034010 and 71171185)

摘要: The effects of packing configurations on the phase transition of straight granular chute flow with two bottlenecks are studied. The granular flow shows a diluteto-dense flow transition when the channel width is varied, accompanied with a peculiar bistable phenomenon. The bistable phenomenon is induced by the initial packing configuration of particles. When the packing is dense, the initial flux is small and will induce a dense flow. When the packing is loose, the initial flux is large and will induce a dilute flow. The fabric network of granular packing is analyzed from a complex network perspective. The degree distribution shows quantitatively different characteristics for the configurations. A two-dimensional (2D) packing clustering coefficient is defined to better quantify the fabric network.

关键词: phase transition, bistable phenomenon, complex network, granular flow

Abstract: The effects of packing configurations on the phase transition of straight granular chute flow with two bottlenecks are studied. The granular flow shows a diluteto-dense flow transition when the channel width is varied, accompanied with a peculiar bistable phenomenon. The bistable phenomenon is induced by the initial packing configuration of particles. When the packing is dense, the initial flux is small and will induce a dense flow. When the packing is loose, the initial flux is large and will induce a dilute flow. The fabric network of granular packing is analyzed from a complex network perspective. The degree distribution shows quantitatively different characteristics for the configurations. A two-dimensional (2D) packing clustering coefficient is defined to better quantify the fabric network.

Key words: granular flow, complex network, phase transition, bistable phenomenon

中图分类号: 

APS Journals | CSTAM Journals | AMS Journals | EMS Journals | ASME Journals