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| Format: | Preprint |
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2025
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| Online-Zugang: | https://arxiv.org/abs/2505.16469 |
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| _version_ | 1866908816522608640 |
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| author | Zhou, Y. Li, M. Guan, Y. Wang, Y. Liu, Y. Zou, Z. |
| author_facet | Zhou, Y. Li, M. Guan, Y. Wang, Y. Liu, Y. Zou, Z. |
| contents | We experimentally and numerically investigate the clogging behavior of granular materials in a two-dimensional vertical pipe. The nonmonotonicity of clogging probability found in a cylindrical vertical pipe [López et al., Phys. Rev. E 102, 010902 (2020)] 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_16469 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Clogging-flowing transition of granular media in a two-dimensional vertical pipe Zhou, Y. Li, M. Guan, Y. Wang, Y. Liu, Y. Zou, Z. Soft Condensed Matter We experimentally and numerically investigate the clogging behavior of granular materials in a two-dimensional vertical pipe. The nonmonotonicity of clogging probability found in a cylindrical vertical pipe [López et al., Phys. Rev. E 102, 010902 (2020)] 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. |
| title | Clogging-flowing transition of granular media in a two-dimensional vertical pipe |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/2505.16469 |