Jamming of granular flow in a two-dimensional hopper

Kiwing To, Pik Yin Lai, H. K. Pak

Research output: Contribution to journalArticlepeer-review

331 Scopus citations


Experiments were performed to account for the jamming phenomenon of the granular system of monodisperse disks in two-dimensional (2D) hoppers. When the arch at the hopper opening was considered as a trajectory of a restricted self-avoiding random walker and the statistics of the number of disks in the arch were measured, the observed jamming probabilities were accounted for quantitatively when the hopper angle is less than 75°.

Original languageEnglish
Pages (from-to)71-74
Number of pages4
JournalPhysical Review Letters
Issue number1
StatePublished - 1 Jan 2001


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