Chin. Phys. Lett.  2003, Vol. 20 Issue (12): 2218-2221    DOI:
Original Articles |
Langevin Simulation of Non-Uniform Granular Gases
ZHANG Duan-Ming1,2;LEI Ya-Jie1;PAN Gui-Jun1;YU Bo-Ming1
1Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 2State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074
Cite this article:   
ZHANG Duan-Ming, LEI Ya-Jie, PAN Gui-Jun et al  2003 Chin. Phys. Lett. 20 2218-2221
Download: PDF(379KB)  
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks
Abstract We present and study a fractal model of a non-uniform granular system for the first time, based on which we numerically solve the dynamics actions in the system successfully in one-dimensional case. The multi-mixture is composed of N different particles, whose granularity distribution has the fractal characteristic. The particles subject to inelastic mutual collisions and obey to Langevin equation between collisions. Far from the equilibrium, i.e., the given typical relaxation time τ of the driving Brownian process is much larger than the mean collision time τc, the results of simulation indicate that the degree of inhomogeneity in the granularity distribution signed by the fractal dimension D of size distribution has great influences on the dynamics actions of the system. The velocity distribution deviates obviously from the Gaussian distribution and the particles cluster more pronounced with the larger value of D in the system. The velocity distribution and spatial clusterization changing with D are presented.

Keywords: 61.43.Bn      61.43.Hv     
Published: 01 December 2003
PACS:  61.43.Bn (Structural modeling: serial-addition models, computer simulation)  
  61.43.Hv (Fractals; macroscopic aggregates (including diffusion-limited Aggregates))  
TRENDMD:   
URL:  
https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2003/V20/I12/02218
Service
E-mail this article
E-mail Alert
RSS
Articles by authors
ZHANG Duan-Ming
LEI Ya-Jie
PAN Gui-Jun
YU Bo-Ming
Related articles from Frontiers Journals
[1] S. Pengmanayol, T. Osotchan, M. Suewattana, N. Ingadapa, J. Girdpun . Hole Mobility of Molecular β-Copper Phthalocyanine Crystal[J]. Chin. Phys. Lett., 2011, 28(8): 2218-2221
[2] DENG Hong-Yan, HAO Wei-Chang, XU Huai-Zhe** . A Transition Phase in the Transformation from α-;, β- and ϵ- to δ-Bismuth Oxide[J]. Chin. Phys. Lett., 2011, 28(5): 2218-2221
[3] WEN Zhang-Bin, HOU Zhi-Lin, FU Xiu-Jun** . Monte Carlo Simulation of the Potts Model on a Dodecagonal Quasiperiodic Structure[J]. Chin. Phys. Lett., 2011, 28(4): 2218-2221
[4] QUAN Wei-Long, LI Hong-Xuan, ZHAO Fei, JI Li, DU Wen, ZHOU Hui-Di, CHEN Jian-Min. Molecular Dynamical Simulations on a-C:H Film Growth from C and H Atomic Flux: Effect of Incident Energy[J]. Chin. Phys. Lett., 2010, 27(8): 2218-2221
[5] QUAN Wei-Long, LI Hong-Xuan, ZHAO Fei, JI Li, DU Wen, ZHOU Hui-Di, CHEN Jian-Min. Molecular Dynamic Simulation on Graphitization and Dehydrogenization of Hydrogenated Carbon Films in Vacuum[J]. Chin. Phys. Lett., 2010, 27(7): 2218-2221
[6] HOU Zhao-Yang, LIU Li-Xia, LIU Rang-Su, TIAN Ze-An. Tracing Nucleation and Growth on Atomic Level in Amorphous Sodium by Molecular Dynamics Simulation[J]. Chin. Phys. Lett., 2010, 27(3): 2218-2221
[7] YANG Bin, LAI Wen-Sheng. Molecular Dynamics Study of Stability of Solid Solutions and Amorphous Phase in the Cu-Al System[J]. Chin. Phys. Lett., 2009, 26(6): 2218-2221
[8] HUANG Wei-Qi, LÜ, Quan, XU Li, ZHANG Rong-Tao, WANG Hai-Xu, JIN Feng. Various Trap States at SiGe-SiO2 Interface Formed by a Pulsed Laser[J]. Chin. Phys. Lett., 2009, 26(2): 2218-2221
[9] LI Jian-Hua, YU Bo-Ming, ZOU Ming-Qing. A Model for Fractal Dimension of Rough Surfaces[J]. Chin. Phys. Lett., 2009, 26(11): 2218-2221
[10] YANG Lei, PEI Wen-Jiang, LI Tao, CHEUNG Yiu-Ming, HE Zhen-Ya. Topological Self-Similar Networks Introduced by Diffusion-Limited Aggregation Mechanism[J]. Chin. Phys. Lett., 2008, 25(3): 2218-2221
[11] GUO Zi-Zheng, AN Cai-Hong. Thermal Stability of Triangular Ferromagnetic Nanowire Arrays under Magnetic Field[J]. Chin. Phys. Lett., 2008, 25(12): 2218-2221
[12] AN Xi-Zhong. Evolution of Voronoi/Delaunay Characterized Micro Structure with Transition from Loose to Dense Sphere Packing[J]. Chin. Phys. Lett., 2007, 24(8): 2218-2221
[13] AN Xi-Zhong. Discrete Element Method Numerical Modelling on Crystallization of Smooth Hard Spheres under Mechanical Vibration[J]. Chin. Phys. Lett., 2007, 24(7): 2218-2221
[14] CHENG Wei, ZHANG Feng-Shou, ZHOU Hong-Yu. Molecular Dynamics Simulation of Myoglobin Collision with Low Energy Ions[J]. Chin. Phys. Lett., 2007, 24(3): 2218-2221
[15] CHENG Wei, ZHANG Feng-Shou, ZHANG Bo-Yang, ZHOU Hong-Yu. Dynamics Simulation on Charge Transfer Relaxation between Myoglobin and Water[J]. Chin. Phys. Lett., 2007, 24(12): 2218-2221
Viewed
Full text


Abstract