Intermittency between avalanche regimes on grain piles.
Phys Rev E
American Physical Society (APS)
MetadataShow full item record
Arran, M., & Vriend, N. (2018). Intermittency between avalanche regimes on grain piles.. Phys Rev E, 97 (6-1), 060901. https://doi.org/10.1103/PhysRevE.97.060901
We experimentally investigate discrete avalanches of grains, driven by a low inflow rate, on an erodible pile in a channel. We observe intermittency between one regime, in which avalanches are quasiperiodic and system spanning, and another, in which they pass at irregular intervals and have a power-law size distribution. Observations are robust to changes of inflow rate and grain type and require no tuning of external parameters. We demonstrate that the state of the pile's surface determines whether avalanche fronts propagate to the end of the channel or stop partway down, and we introduce a toy model for the latter case that reproduces the observed power-law size distribution. We suggest direct applications to avalanches of pharmaceutical and geophysical grains, and the possibility of reconciling the "self-organized criticality" predicted by several authors with the hysteretic behavior described by others.
Royal Society (RG130403)
External DOI: https://doi.org/10.1103/PhysRevE.97.060901
This record's URL: https://www.repository.cam.ac.uk/handle/1810/282822
Recommended or similar items
The current recommendation prototype on the Apollo Repository will be turned off on 03 February 2023. Although the pilot has been fruitful for both parties, the service provider IKVA is focusing on horizon scanning products and so the recommender service can no longer be supported. We recognise the importance of recommender services in supporting research discovery and are evaluating offerings from other service providers. If you would like to offer feedback on this decision please contact us on: firstname.lastname@example.org