2002•Unpublished venueRequires access

Effects of Bounce on Particle Transport, Deposition and Removal in Turbulent Channel Flow

Ali Mazaheri, Goodarz Ahmadi, Haifeng Zhang

Abstract

Effects of bounce on particle transport, deposition and removal in turbulent channel flow are studied. The pseudo-spectral method is used to generate the instantaneous turbulent fluid velocity field by Direct Numerical Simulation (DNS) procedure. The particle equation of motion includes all the relevant hydrodynamic forces. In addition, simulation accounts for particle adhesion, resuspension and rebound processes. For particle bounce from the surface, the critical velocity is evaluated and is used in the analysis. Effects of bounce during particle-wall collisions on the deposition rate are also studied.

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Key concepts: Mechanics, Turbulence, Particle (ecology), Particle deposition, Deposition (geology), Open-channel flow, Flow (mathematics), Magnetosphere particle motion