Steady particulate flows in a horizontal rotating cylinder
| Autor: | Kenji Yamane, S. A. Altobelli, Yutaka Tsuji, Toshitsugu Tanaka, Masami Nakagawa |
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| Rok vydání: | 1998 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics business.industry Mechanical Engineering Computational Mechanics Particle-laden flows Mechanics Condensed Matter Physics Rotation Granular material Angle of repose Discrete element method Cylinder (engine) law.invention Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Transverse plane Optics Mechanics of Materials law Two-phase flow business |
| Zdroj: | Physics of Fluids. 10:1419-1427 |
| ISSN: | 1089-7666 1070-6631 |
| DOI: | 10.1063/1.869858 |
| Popis: | Results of discrete element method (DEM) simulation and magnetic resonance imaging (MRI) experiments are compared for monodisperse granular materials flowing in a half-filled horizontal rotating cylinder. Because opacity is not a problem for MRI, a long cylinder with an aspect ratio ∼7 was used and the flow in a thin transverse slice near the center was studied. The particles were mustard seeds and the ratio of cylinder diameter to particle diameter was approximately 50. The parameters compared were dynamic angle of repose, velocity field in a plane perpendicular to the cylinder axis, and velocity fluctuations at rotation rates up to 30 rpm. The agreement between DEM and MRI was good when the friction coefficient and nonsphericity were adjusted in the simulation for the best fit. |
| Databáze: | OpenAIRE |
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