Particle spin in a turbulent shear flow

The translational and rotational motions of small spherical particles dilutely suspended in a turbulent channel flow have been investigated. Three different particle classes were studied in an Eulerian-Lagrangian framework to examine the effect of the response times on the particle statistics. The r...

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Bibliographic Details
Published inPhysics of fluids (1994) Vol. 19; no. 7; pp. 078109 - 078109-4
Main Authors Mortensen, P. H., Andersson, H. I., Gillissen, J. J. J., Boersma, B. J.
Format Journal Article
LanguageEnglish
Published Melville, NY American Institute of Physics 01.07.2007
Subjects
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Multiphase and particle-laden flows
Nonhomogeneous flows
Physics
Turbulent flow
Euler Lagrange equation
Pipe flow
Two-phase flow
Shear flow
Digital simulation
Rotating sphere
Modelling
Angular velocity
Spherical particle
Particle suspension
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Summary:The translational and rotational motions of small spherical particles dilutely suspended in a turbulent channel flow have been investigated. Three different particle classes were studied in an Eulerian-Lagrangian framework to examine the effect of the response times on the particle statistics. The results for the fluctuating particle velocities were consistent with earlier observations. The mean particle spin exceeded the mean fluid angular velocity in a region close to the channel walls. The fluctuating components of the particle spin were consistently lower than the corresponding fluid angular velocities for the heaviest particles.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.2750677