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Statistics of Particle Suspensions in Turbulent Channel Flow

Published online by Cambridge University Press:  20 August 2015

Lihao Zhao and
Helge I. Andersson
Lihao Zhao*
Affiliation:
Fluids Engineering Division, Department of Energy and Process Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
Helge I. Andersson*
Affiliation:
Fluids Engineering Division, Department of Energy and Process Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
*
Corresponding author.Email:lihao.zhao@ntnu.no
Email:helge.i.andersson@ntnu.no
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Abstract

Particle dynamics in a turbulent channel flow is considered. The effects of particle concentration and Reynolds number on the particle velocity statistics are investigated. Four different particle response times, τ+=1, 5, 30 and 100, are examined for three different Reynolds numbers, Re*=200, 360 and 790 (based on channel height and friction velocity). The particle concentration evolves with time and statistics obtained during three different sampling periods might be distinctly different. The mean and fluctuating particle velocities are substantially affected both by the particle response time and by the Reynolds number of the flow.

Keywords

76T1576F1076F65Spherical particlesDNSturbulencesamplingReynolds number effects

Information

Type
Research Article
Information
Communications in Computational Physics , Volume 11 , Issue 4 , April 2012, pp. 1311 - 1322
Copyright
Copyright © Global Science Press Limited 2012

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