Size Segregation in Rapid Flows of Inelastic Particles with Continuous Size Distributions
LI Rui1**, ZHANG Duan-Ming2, LI Zhi-Hao1
1Department of Physics, Hubei University of Education, Wuhan 430205 2Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
Size Segregation in Rapid Flows of Inelastic Particles with Continuous Size Distributions
LI Rui1**, ZHANG Duan-Ming2, LI Zhi-Hao1
1Department of Physics, Hubei University of Education, Wuhan 430205 2Department of Physics, Huazhong University of Science and Technology, Wuhan 430074
摘要Two-dimensional numerical simulations are employed to gain insight into the segregation behavior of granular mixtures with a power-law particle size distribution in the presence of a granular temperature gradient. It is found that particles of all sizes move toward regions of low granular temperature. Species segregation is also observed. Large particles demonstrate a higher affinity for the low-temperature regions and accumulate in these cool regions to a greater extent than their smaller counterparts. Furthermore, the local particle size distribution maintains the same form as the overall (including all particles) size distribution.
Abstract：Two-dimensional numerical simulations are employed to gain insight into the segregation behavior of granular mixtures with a power-law particle size distribution in the presence of a granular temperature gradient. It is found that particles of all sizes move toward regions of low granular temperature. Species segregation is also observed. Large particles demonstrate a higher affinity for the low-temperature regions and accumulate in these cool regions to a greater extent than their smaller counterparts. Furthermore, the local particle size distribution maintains the same form as the overall (including all particles) size distribution.
LI Rui**;ZHANG Duan-Ming;LI Zhi-Hao. Size Segregation in Rapid Flows of Inelastic Particles with Continuous Size Distributions[J]. 中国物理快报, 2012, 29(1): 10503-010503.
LI Rui**, ZHANG Duan-Ming, LI Zhi-Hao. Size Segregation in Rapid Flows of Inelastic Particles with Continuous Size Distributions. Chin. Phys. Lett., 2012, 29(1): 10503-010503.
[1] Campbell C S 1990 Annu. Rev. Fluid Mech. 22 57 [2] Kadanoff L R 1999 Rev. Mod. Phys. 71 435 [3] Goldhirsch I 2003 Annu. Rev. Fluid Mech. 35 267 [4] Jaeger H M, Nagel S R and Behringer R P 1996 Phys. Today 49 32 [5] Jenkins J T 1998 Physics of Dry Granular Media (Dordrecht: Kluwer) [6] Hsiau S S and Hunt M L 1996 Acta Mech. 114 121 [7] Jenkins J T and Mancini F 1989 Phys. Fluids A 1 2050 [8] Luding S, Strauss O and McNamara S 2000 Symposium on Segregation in Granular Flows (Dordrecht: Kluwer Academic) [9] Louge M Y, Jenkins J T, Xu H and Arnarson B O 2000 Mechanics for a New Millennium (Dordrecht: Kluwer Academic) [10] Zhang D M, Li R et al 2005 J. Phys. A: Math. Gen. 38 8861 [11] Li R, Zhang D M, Chen Z Y and Su X Y 2007 Chin. Phys. Lett. 24 1482 [12] Li R, Zhang D M and Li Z H 2011 Chin. Phys. Lett. 28 090506 [13] Arnarson B O and Willits J T 1998 Phys. Fluids 10 1324 [14] Khakhar D V, McCarthy J J 1999 Chaos 9 594 [15] Dahl S R and Hrenya C M 2004 Phys. Fluids 16 1
2012, Vol. 29 
