On models for turbulence modulation in fluid–particle flows

A model is introduced for the carrier phase turbulence in a fluid–particle flow based on the volume-averaged equations for the kinetic energy of the carrier phase. The model shows the trends observed by experiment, that is, small particles attenuate turbulence while large particles augment turbulenc...

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Bibliographic Details
Published in:International journal of multiphase flow 2000-05, Vol.26 (5), p.719-727
Main Author: Crowe, Clayton T.
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Equations of motion
Exact sciences and technology
Fluid dynamics
Fluid–particle flows
Fundamental areas of phenomenology (including applications)
Kinetic energy
Mathematical models
Multiphase and particle-laden flows
Nonhomogeneous flows
Particles (particulate matter)
Physics
Turbulence
Turbulence modulation
Turbulence simulation and modeling
Turbulent flows, convection, and heat transfer
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Summary:A model is introduced for the carrier phase turbulence in a fluid–particle flow based on the volume-averaged equations for the kinetic energy of the carrier phase. The model shows the trends observed by experiment, that is, small particles attenuate turbulence while large particles augment turbulence. The change in turbulence intensity is correlated with the particle loading and the ratio of the particle diameter to the turbulence length scale.
ISSN:0301-9322
1879-3533
DOI:10.1016/S0301-9322(99)00050-6