Clogging-flowing transition of granular media in a two-dimensional vertical pipe.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41857912.
- Also identified by DOI 10.1103/qs87-8yts.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
We experimentally and numerically investigate the clogging behavior of granular materials in a two-dimensional vertical pipe. The nonmonotonicity of the clogging probability found in a cylindrical vertical pipe [López et al., Phys. Rev. E 102, 010902(R) (2020)2470-004510.1103/PhysRevE.102.010902] is also observed in the two-dimensional case. We numerically demonstrate that the clogging probability strongly correlates with the friction coefficient μ in addition to the pipe-to-particle diameter ratio D/d. We thus construct a clogging-flowing D/d-μ phase diagram within the 2<D/d<3 range. Finally, by analyzing the geometrical arrangements of particles and using a simple analysis of forces and torques, we are able to predict the clogging-flowing transition in the D/d-μ phase diagram and explain the mechanism of the observed counterintuitive nonmonotonicity in more detail. We demonstrate that for pipe clogging, friction-mediated force and torque equilibrium are essential for arch formation.