Swirling flows in horizontally vibrated beds of dense granular materials--颗粒学报PARTICUOLOGY

Bakhshinejad, A., & Zamankhan, P. (2012). Swirling flows in horizontally vibrated beds of dense granular materials. Particuology, 10(6), 683–691. https://doi.org/10.1016/j.partic.2012.06.005

Swirling flows in horizontally vibrated beds of dense granular materials

Ali Bakhshinejad^*, Piroz Zamankhan

Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland, Hjardarhagi 2-6, IS-107 Reykjavik, Iceland

10.1016/j.partic.2012.06.005

Volume 10, Issue 6, December 2012, Pages 683-691

Received 5 February 2012, Revised 10 June 2012, Accepted 13 June 2012, Available online 23 August 2012.

E-mail: alb27@hi.is; ali.bakhshinejad@yahoo.com

Highlights

► A granular material in a rectangular container with two hollow cylinders was studied as it underwent horizontal vibrations.

► Swirling granular flows were observed in the cylinders while the grains cascaded down the outer surface of the piles that formed outside the cylinders.

► The swirling-convection regime was simulated with a Lagrangian approach combined with large-eddy simulations.

Abstract

In a series of experiments, a granular material in a rectangular container with two hollow cylinders was studied as it underwent horizontal vibrations. At the peak values of acceleration, novel swirling granular flows were observed in the cylinders while the grains cascaded down the outer surface of the piles that formed outside the cylinders. Computer simulations were performed that supported our interpretation of the behaviour observed in the experiments.

Graphical abstract

Keywords

Swirl granular flowsInstability; Computer simulation; Measurements; 3D drawing tools; 3D photo-tracing geometry

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