Journal
POWDER TECHNOLOGY
Volume 265, Issue -, Pages 83-87Publisher
ELSEVIER
DOI: 10.1016/j.powtec.2014.01.030
Keywords
Multiphase turbulence theory; Gas-particle turbulence model; Multiphase CFD; Reynolds-averaged two fluid model
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Funding
- U.S. Office of Personnel Management
- U.S. Social Security Administration
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CFD calculations for multiphase gas-particle flows would benefit from a multiphase turbulence theory which would allow the direct calculation of an average solution. A slightly truncated form of the two fluid equations, which are the basis of the MFIX code, have been formally averaged, introducing Favre-like averages for the phasic velocities. This process results in a set of equations which can be solved directly for the average variables describing the flow. This equation set has significantly fewer closure terms than would have occurred using standard Reynolds averaging. The full set of required closure relations is enumerated. Some simple forms for these closures are suggested, although no attempt is made to establish their validity. (C) 2014 Elsevier B.V. All rights reserved.
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