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Boundary-element method simulation of the impact of bounding walls on the dynamics of a particle group freely moving in a wide-gap Couette flow


Author Info

  • Lin, Wenxian
  • Yi, Jidong
  • Graham, A.L.
  • Liu, Tao
  • Xia, Chaofeng
  • Ingber, M.S.
  • Leggoe, J.W.
  • Abbott, J.R.
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    In this study, the impact of the bounding walls on the dynamics of a group of neutrally-buoyant identical rigid spheres freely moving at negligible Reynolds numbers in a wide-gap Couette flow, which is important for understanding the particle migrations presented in concentrated suspensions subjected to inhomogeneous shear flows, is simulated by a three-dimensional boundary-element method (BEM) code. The results show that the particle interactions very close to the bounding walls cause the particle group to migrate away from the walls. As the distance of the bounding walls from the group increases, the migration changes direction and the group then move towards the walls. As this distance continues to increase, the migration of the group decreases and beyond a specific distance from the bounding walls the migration of the group is negligible. In addition, the BEM simulations show that the extent and rate of the migration of the group increase as the inter-particle distance decreases.

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    Bibliographic Info

    Article provided by Elsevier in its journal Applied Energy.

    Volume (Year): 83 (2006)
    Issue (Month): 7 (July)
    Pages: 669-680

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    Handle: RePEc:eee:appene:v:83:y:2006:i:7:p:669-680

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    Keywords: Boundary-element method Particle migration Wide-gap Couette flow Bounding wall Inhomogeneous shear flow;


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    Cited by:
    1. Sebri, Maamar, 2009. "La Zone Méditerranéenne Face à la Pollution de L’air : Une Investigation Econométrique
      [The Mediterranean Zone in front of Air pollution: an Econometric Investigation]
      ," MPRA Paper 32382, University Library of Munich, Germany.


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