The sands of time run faster near the end.
Ontology highlight
ABSTRACT:
SUBMITTER: Koivisto J
PROVIDER: S-EPMC5461489 | biostudies-other | 2017 Jun
REPOSITORIES: biostudies-other
Publications
The sands of time run faster near the end.
Koivisto Juha J Durian Douglas J DJ
Nature communications 20170601
Grains exiting an underwater silo exhibit an unexpected surge in discharge rate as they empty. This contrasts with the constant flow rate of dry granular hoppers and the decreasing flow rate of pure liquids. Here we find that this surge depends on hopper diameter and happens also in air. The surge can be turned off by fixing the rate of fluid flow through the granular packing. With no flow control, dye injected on top of the packing gets drawn into the grains. We conclude that the surge is cause ...[more]
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