Symmetric heaping in grains: A phenomenological model

Pik Yin Lai, L. C. Jia, C. K. Chan

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Heap formation of granular materials in a vertical vibrating bed is studied by a simple model using the profile of the heap as the dynamic variable. Vibration increases the local height, but is counterbalanced by the nonlinear coupling, which tends to suppress the growth of the height. The steady state heap can be solved in closed form in terms of Jacobian elliptic functions. Phenomena such as heap formation and downward and upward heaps can be reproduced. Our results agree with the experimentally observed change of downward to upward steady heaps as the vibration strength is increased. Predictions from the model compare favorably with experimental results on heap profiles and heaping angles.

Original languageEnglish
Pages (from-to)5593-5599
Number of pages7
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Issue number5
StatePublished - 2000


Dive into the research topics of 'Symmetric heaping in grains: A phenomenological model'. Together they form a unique fingerprint.

Cite this