Cooperative effects induced by intruders evolving through a granular medium
| Autor: | Pierre Jop, Alban Sauret, Aymeric Merceron |
|---|---|
| Přispěvatelé: | Surface du Verre et Interfaces (SVI), Université Pierre et Marie Curie - Paris 6 (UPMC)-SAINT-GOBAIN-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2018 |
| Předmět: |
Length scale
Physics cond-mat.soft Characteristic length PACS 45.70.-n– Granular systems 45.70.Mg– Granular flow: mixing segregation and stratification 81.05.Rm– Porous materials granular materials Fluids & Plasmas Fluid Dynamics (physics.flu-dyn) FOS: Physical sciences General Physics and Astronomy Perturbation (astronomy) Physics - Fluid Dynamics Mechanics Condensed Matter - Soft Condensed Matter 01 natural sciences Mathematical Sciences 010305 fluids & plasmas [PHYS.MECA.MEMA]Physics [physics]/Mechanics [physics]/Mechanics of materials [physics.class-ph] Amplitude physics.flu-dyn [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other] 0103 physical sciences Physical Sciences Soft Condensed Matter (cond-mat.soft) 010306 general physics Computer Science::Cryptography and Security |
| Zdroj: | EPL, vol 121, iss 3 EPL (Europhysics Letters), vol 121, iss 3 Merceron, A; Sauret, A; & Jop, P. (2018). Cooperative effects induced by intruders evolving through a granular medium. EPL, 121(3). doi: 10.1209/0295-5075/121/34005. UC Santa Barbara: Retrieved from: http://www.escholarship.org/uc/item/7b20b7jg EPL-Europhysics Letters EPL-Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2018, 121 (3), ⟨10.1209/0295-5075/121/34005⟩ |
| ISSN: | 0295-5075 1286-4854 |
| DOI: | 10.1209/0295-5075/121/34005. |
| Popis: | International audience; Applying mechanical perturbations in a granular assembly may rearrange the configuration of the particles. However, the spatial propagation of an event is not related to the size of the external perturbation alone. Thus, the characteristic length scale of an event is not well defined. In this study, we trigger rearrangements by driving two intruders through a vertical two-dimensional packing of disks. The amplitude of the rearrangements of the granular assembly appearing around the two evolving intruders is related to their separating distances. We show that there exists a characteristic distance between intruders under which the dynamics of the grains above one intruder is influenced by the other. The size of the intruders has little effect on this characteristic length. Finally, we show that the correlation between the movements of the grains decreases with the distance away from the intruders over a larger length scale. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|