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A multiple-time-scale turbulence model based on variable partitioning of the turbulent kinetic energy spectrumA multiple-time-scale turbulence model of a single point closure and a simplified split-spectrum method is presented. In the model, the effect of the ratio of the production rate to the dissipation rate on eddy viscosity is modeled by use of the multiple-time-scales and a variable partitioning of the turbulent kinetic energy spectrum. The concept of a variable partitioning of the turbulent kinetic energy spectrum and the rest of the model details are based on the previously reported algebraic stress turbulence model. Example problems considered include: a fully developed channel flow, a plane jet exhausting into a moving stream, a wall jet flow, and a weakly coupled wake-boundary layer interaction flow. The computational results compared favorably with those obtained by using the algebraic stress turbulence model as well as experimental data. The present turbulence model, as well as the algebraic stress turbulence model, yielded significantly improved computational results for the complex turbulent boundary layer flows, such as the wall jet flow and the wake boundary layer interaction flow, compared with available computational results obtained by using the standard kappa-epsilon turbulence model.
Document ID
19900033219
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kim, S.-W.
(NASA Marshall Space Flight Center; Universities Space Research Association, Huntsville, AL, United States)
Chen, C.-P.
(Alabama, University Huntsville, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Publication Information
Publication: Numerical Heat Transfer, Part B: Fundamentals
Volume: 16
Issue: 2, 19
ISSN: 1040-7790
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
90A20274
Distribution Limits
Public
Copyright
Other

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