RECURRENT CLOGGING AND DENSITY WAVES IN GRANULAR MATERIAL FLOWING THROUGH A NARROW PIPE

被引:51
作者
POSCHEL, T [1 ]
机构
[1] HUMBOLDT UNIV BERLIN, FACHBEREICH PHYS, INST THEORET PHYS, D-10115 BERLIN, GERMANY
来源
JOURNAL DE PHYSIQUE I | 1994年 / 4卷 / 04期
关键词
D O I
10.1051/jp1:1994155
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report on density waves in granular material, investigated both experimentally and numerically. When granular material falls through a long narrow pipe one observes recurrent clogging. The kinetic energy of the falling particles increases up to a characteristic threshold corresponding to the onset of recurrent clogging and density waves of no definite wavelength. The distances between regions of high density depend strongly on the initial conditions. They vary irregularly without any characteristic time and length scale. The particle-flow was investigated using 2D Molecular Dynamics simulations. Experimental investigations lead to equivalent results.
引用
收藏
页码:499 / 506
页数:8
相关论文
共 47 条
[1]  
Allen M. P., 1987, COMPUTER SIMULATIONS
[2]   CELLULAR AUTOMATA MODELS OF GRANULAR FLOW [J].
BAXTER, GW ;
BEHRINGER, RP .
PHYSICAL REVIEW A, 1990, 42 (02) :1017-1020
[3]   PATTERN-FORMATION IN FLOWING SAND [J].
BAXTER, GW ;
BEHRINGER, RP ;
FAGERT, T ;
JOHNSON, GA .
PHYSICAL REVIEW LETTERS, 1989, 62 (24) :2825-2828
[4]   CELLULAR AUTOMATA MODELS FOR THE FLOW OF GRANULAR-MATERIALS [J].
BAXTER, GW ;
BEHRINGER, RP .
PHYSICA D, 1991, 51 (1-3) :465-471
[5]   RANDOM-WALK APPROACH TO GRANULAR FLOWS [J].
CARAM, H ;
HONG, DC .
PHYSICAL REVIEW LETTERS, 1991, 67 (07) :828-831
[6]  
Coulomb C., 1773, ACAD ROY SCI MEM MA, V7, P343
[7]   DISCRETE NUMERICAL-MODEL FOR GRANULAR ASSEMBLIES [J].
CUNDALL, PA ;
STRACK, ODL .
GEOTECHNIQUE, 1979, 29 (01) :47-65
[8]   SCALING BEHAVIOR IN SIZE SEGREGATION (BRAZIL NUTS) [J].
DEVILLARD, P .
JOURNAL DE PHYSIQUE, 1990, 51 (05) :369-373
[9]   PATTERN-FORMATION OF POWDER ON A VIBRATING DISK [J].
DINKELACKER, F ;
HUBLER, A ;
LUSCHER, E .
BIOLOGICAL CYBERNETICS, 1987, 56 (01) :51-56
[10]   GRANULAR FLOW - PHYSICAL EXPERIMENTS AND THEIR IMPLICATIONS FOR MICROSTRUCTURAL THEORIES [J].
DRAKE, TG .
JOURNAL OF FLUID MECHANICS, 1991, 225 :121-152