| Autor: |
Marin, Alvaro, Lhuissier, Henri, Rossi, Massimiliano, Kaehler, Christian J. |
| Rok vydání: |
2017 |
| Předmět: |
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| Zdroj: |
Phys. Rev. E 97, 021102 (2018) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevE.97.021102 |
| Popis: |
The flow of a charged-stabilized suspension through a single constricted channel is studied experimentally by tracking the particles individually. Surprisingly, the behavior is found to be qualitatively similar to that of inertial dry granular systems: For small values of the neck-to-particle size ratio (D/d<3), clogs form randomly as arches of particle span the constriction. The statistics of the clogging events are Poissonian as reported for granular systems and agree, for moderate particle volume fraction ($\phi\approx20\%$), with a simple stochastic model for the number of particles at the neck. For larger neck sizes (D/d>3), even at the largest $\phi$ ($\approx60\%$) achievable in the experiments, an uninterrupted particle flow is observed, which resembles that of an hourglass. This particularly small value of D/d at the transition to a practically uninterrupted flow is attributed to the low effective friction between the particles, achieved by the particle's functionalization and lubrication. |
| Databáze: |
arXiv |
| Externí odkaz: |
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