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Forces acting on particles in separated wall-bounded shear flow

  1. A. Kubik*,
  2. L. Kleiser

Article first published online: 13 DEC 2004

DOI: 10.1002/pamm.200410237

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PAMM

PAMM

Volume 4, Issue 1, pages 512–514, December 2004

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How to Cite

Kubik, A. and Kleiser, L. (2004), Forces acting on particles in separated wall-bounded shear flow. Proc. Appl. Math. Mech., 4: 512–514. doi: 10.1002/pamm.200410237

Author Information

  1. Institute of Fluid Dynamics, ETH Zürich, Sonneggstrasse 3, 8092 Zürich, Switzerland

*Phone: +41 1 632 0886, Fax: +41 1 632 1147

Publication History

  1. Issue published online: 13 DEC 2004
  2. Article first published online: 13 DEC 2004

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Abstract

Trajectories of solid particles in laminar and turbulent flow over a backward-facing step (BFS) were numerically computed by integrating the equation of motion for particles. The various forces acting on the particles [5],[6] were calculated for a variety of flow Reynolds numbers and for different particle characteristics such as the Stokes number and the particle-to-fluid density ratio. The investigation was conducted for the distinct flow regimes of the BFS flow separately. Generally, the drag and gravitation were found to be the most significant forces. The lift and history force were the next most important, mostly two orders of magnitude smaller, but in some cases closing up to the other two in importance. The pressure and virtual mass effects were very small for the majority of cases. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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