Competitive dynamics of two erosion patterns around a cylinder
| Autor: | Yann Bertho, Philippe Gondret, Cyprien Morize, Florent Lachaussée, Alban Sauret |
|---|---|
| Přispěvatelé: | Fluides, automatique, systèmes thermiques (FAST), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Surface du Verre et Interfaces (SVI), Université Pierre et Marie Curie - Paris 6 (UPMC)-SAINT-GOBAIN-Centre National de la Recherche Scientifique (CNRS), ANR-05-PADD-0014,ACDUQ,Action collective pour une maîtrise durable de la santé animale : qualification sanitaire en élevage de ruminants(2005) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
Competitive dynamics Classical Physics Computational Mechanics FOS: Physical sciences Vertical cylinder Condensed Matter - Soft Condensed Matter 01 natural sciences 010305 fluids & plasmas Physics - Geophysics 0103 physical sciences Horseshoe vortex 010306 general physics cond-mat.soft Fluid Flow and Transfer Processes Applied Mathematics Mechanical Engineering Fluid Dynamics (physics.flu-dyn) Mechanics Physics - Fluid Dynamics physics.geo-ph Geophysics (physics.geo-ph) physics.flu-dyn Modeling and Simulation Soft Condensed Matter (cond-mat.soft) Astrophysics::Earth and Planetary Astrophysics Geology |
| Zdroj: | Physical Review Fluids Physical Review Fluids, American Physical Society, 2018, 3 (1), pp.012302(R). ⟨10.1103/PhysRevFluids.3.012302⟩ PHYSICAL REVIEW FLUIDS, vol 3, iss 1 Lachaussee, F; Bertho, Y; Morize, C; Sauret, A; & Gondret, P. (2018). Competitive dynamics of two erosion patterns around a cylinder. PHYSICAL REVIEW FLUIDS, 3(1). doi: 10.1103/PhysRevFluids.3.012302. UC Santa Barbara: Retrieved from: http://www.escholarship.org/uc/item/3sd4056p Physical Review Fluids, vol 3, iss 1 |
| ISSN: | 2469-990X |
| Popis: | We investigate experimentally the local erosion of a granular bed near a fixed vertical cylinder that emerges from the bed. The onset of erosion arising at the base of the cylinder and usually ascribed to the wrapping horseshoe vortex is determined and rationalized by a flow contraction effect. We report a new erosion pattern visible downstream of the cylinder that consists of two side-by-side elongated holes. This pattern is observed for flow regimes close to the horseshoe scour onset, whose growth usually inhibits its spatiotemporal development. 6 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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