Discharge of a silo through a lateral orifice: Role of the bottom inclination versus friction
| Autor: | Pierre-Yves Lagrée, Pierre Ruyer, Pascale Aussillous, Z Zou |
|---|---|
| Přispěvatelé: | Institut universitaire des systèmes thermiques industriels (IUSTI), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), PSN-RES/SEMIA/LSMA, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Institut Jean Le Rond d'Alembert (DALEMBERT), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de statistique et des modélisations avancées (IRSN/PSN-RES/SEMIA/LSMA), Service de Maîtrise des Incidents et Accidents (IRSN/PSN-RES/SEMIA), Institut de Radioprotection et de Sûreté Nucléaire (IRSN)-Institut de Radioprotection et de Sûreté Nucléaire (IRSN) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Constitutive equation Mechanics Gravitational acceleration 01 natural sciences 010305 fluids & plasmas Volumetric flow rate Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Rheology Inclination angle 0103 physical sciences Silo Mass flow rate [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] 010306 general physics Body orifice |
| Zdroj: | Physical Review E Physical Review E, American Physical Society (APS), 2020, 102, pp.052902. ⟨10.1103/PhysRevE.102.052902⟩ Physical Review E, 2020, 102, pp.052902. ⟨10.1103/PhysRevE.102.052902⟩ |
| ISSN: | 2470-0045 2470-0053 |
| DOI: | 10.1103/PhysRevE.102.052902⟩ |
| Popis: | International audience; In this work we propose to identify the relative role of the inclination of gravitational acceleration and friction on the discharge flow rate of a granular media from a rectangular silo by varying the silo geometry thanks to an inclined bottom which ends up at a lateral outlet. The study is motivated by a nuclear safety problem: a fuel rod (modeled by an elongated silo) accidentally releases fuel fragments (modeled by grains). We performed experiments where we independently measured the mass flow rate and the velocity profiles, together with discrete particle simulations and continuum simulations with a frictional rheology described by a μ(I) constitutive law and taking into account the wall friction. We study monolayer flows and three-dimensional flows, and we propose an analytical model that predicts the discharge flow rate of particles from a rectangular silo with an inclined bottom according to its outlet aspect ratio and the bottom inclination angle. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|