应用数学和力学（英文版）
應用數學和力學（英文版）
응용수학화역학（영문판）
APPLIED MATHEMATICS AND MECHANICS(ENGLISH EDITION)
2014年
12期
1565-1572
,共8页
胡茂彬%刘启一%孙王平%姜锐%吴清松
鬍茂彬%劉啟一%孫王平%薑銳%吳清鬆
호무빈%류계일%손왕평%강예%오청송
granular flow%complex network%phase transition%bistable phenomenon
The effects of packing configurations on the phase transition of straight granular chute flow with two bottlenecks are studied. The granular flow shows a dilute-to-dense flow transition when the channel width is varied, accompanied with a peculiar bistable phenomenon. The bistable phenomenon is induced by the initial packing config-uration 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 di-lute 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 coe?cient is defined to better quantify the fabric network.
