Convection Rolls and Individual Particles Movements in Horizontally Vibrated Granular Particles System |
| A. Rehman a, Ping Wua, Li Li a, Shiping Zhang a and Li Wang b
aSchool of Mathematics and Physics, University of Science and Technology, Beijing, 10083, China bSchool of Energy and Environmental Engineering, University of Science and Technology, Beijing, 10083, China |
| Received: July 15, 2016 |
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| Convection in horizontally vibrated granular systems is significant for scientists and engineers for their importance in the field of mining, geo-physics, and pharmaceutical etc. This research work studied three types of convection rolls, "Homogeneous convection roll", "lower-right diagonal convection roll" and "upper-right diagonal convection roll" which occurred in a square container filled with binary granular particles mixture of sized d=(4.0± 0.2) mm and d=(8.0± 0.2) mm. Container was vibrated horizontally with low frequencies f and low dimensionless acceleration Γ . Helical movement was observed along the walls perpendicular to direction of motion while straight-line movement along the walls horizontal to direction of motion. Helical and straight-line movements of particles along the walls are the part of convection rolls. A heap appeared due to vibration, which has dominant effect on the convection rolls. Heap position is function of frequency f and dimensionless accelerations Γ. |
DOI: 10.12693/APhysPolA.130.1336 PACS numbers: 45.70.-n, 47.57.Gc, 47.52.+j, 47.57.Qk, 83.80.Fg |