Particle Sedimentation in Wall-Bounded Turbulent Flows

Conference paper (2006)
Faculty
Applied Sciences (AS) (TU Delft)
Copyright: © 2006 The Author(s)
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Published Date

07-09-2006

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Source:

ECCOMAS CFD 2006: Proceedings of the European Conference on Computational Fluid Dynamics, Egmond aan Zee, The Netherlands, September 5-8, 2006

Faculty

Applied Sciences

Abstract

In this work, a comparison between the results of point-particle direct numerical simulations and PIV/PTV experiments of a particle-laden horizontal channel flow is presented. The numerical simulations were preformed trying to mimic as much as possible the experimental conditions. The accuracy of the point-particle approach was evaluated by comparison of the concentration, velocity and velocity fluctuation profiles. The agreement was good, both qualitatively and quantitatively, in the central part of the channel. However, in the near-wall region some differences were found. This can be explained by the lack of resuspension present in the simulations, because we considered only the fluid-particle interaction (one-way coupling) and neglected both the particle-fluid interaction (two-way coupling) and the particle-particle interaction (collisions).

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