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Turbulence kinetic energy equation for dilute suspensionsA multiphase turbulence closure model is presented which employs one transport equation, namely the turbulence kinetic energy equation. The proposed form of this equation is different from the earlier formulations in some aspects. The power spectrum of the carrier fluid is divided into two regions, which interact in different ways and at different rates with the suspended particles as a function of the particle-eddy size ratio and density ratio. The length scale is described algebraically. A mass/time averaging procedure for the momentum and kinetic energy equations is adopted. The resulting turbulence correlations are modeled under less retrictive assumptions comparative to previous work. The closures for the momentum and kinetic energy equations are given. Comparisons of the predictions with experimental results on liquid-solid jet and gas-solid pipe flow show satisfactory agreement.
Document ID
19900001078
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Abou-Arab, T. W. (Kentucky Univ. Lexington, KY, United States)
Roco, M. C. (Kentucky Univ. Lexington, KY, United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1989
Publication Information
Publication: NASA, Marshall Space Flight Center, Constitutive Relationships and Models in Continuum Theories of Multiphase Flows
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
90N10394
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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