The jamming phenomenon of granular flow of mono-disperse disks in a two-dimensional hopper is studied experimentally. When the opening of the hopper d is small, jamming occurs due to formation of an arch at the hopper opening. The jamming probability as a function of the hopper opening width is measured which show a sharp decrease at some range of d. By observing the disk configurations of the arch in the jamming events, the jamming probability can be explained quantitatively using a restricted random walker model. The average horizontal and vertical spans of the jamming arch are calculated from the restricted random walk model which compares favorably with experiments.
|Number of pages||7|
|Journal||Physica A: Statistical Mechanics and its Applications|
|State||Published - 15 Nov 2002|
|Event||Slow Dynamical Processes in Nature - Seoul, Korea, Republic of|
Duration: 25 Nov 2001 → 27 Nov 2001
- Granular flow