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Rough Cylindrical Object Immersed in a Granular Stream of Hard Disks

In: Traffic and Granular Flow ’07

Author

Listed:
  • Payman Jalali

    (Lappeenranta University of Technology, Department of Energy and Environmental Technology)

  • Pertti Sarkomaa

    (Lappeenranta University of Technology, Department of Energy and Environmental Technology)

Abstract

Summary We have investigated stresses on rough cylindrical objects confronted with a granular stream of inelastic hard disks. The roughness of cylindrical objects is created via covering their surfaces with hard disks of given size and material. We have employed event-driven simulations using restitution coefficients dependent of the impact velocity in a collision. We report the effect of material property (restitution coefficient) on development of granular shock wave around the object with corresponding stresses exerted on it. The role of the roughness of the object in resulting flow is also studied. Moreover, simulations are performed in two conditions with gravity and without it.

Suggested Citation

  • Payman Jalali & Pertti Sarkomaa, 2009. "Rough Cylindrical Object Immersed in a Granular Stream of Hard Disks," Springer Books, in: Cécile Appert-Rolland & François Chevoir & Philippe Gondret & Sylvain Lassarre & Jean-Patrick Lebacq (ed.), Traffic and Granular Flow ’07, pages 525-533, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-77074-9_57
    DOI: 10.1007/978-3-540-77074-9_57
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