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The Use of DNS in Turbulence ModelingThe use of Direct numerical simulations (DNS) data in developing and testing turbulence models is reviewed. The data is used to test turbulence models at all levels: algebraic, one-equation, two-equation and full Reynolds stress models were tested. Particular examples on the development of models for the dissipation rate equation are presented. Homogeneous flows are used to test new scaling arguments for the various terms in the dissipation rate equation. The channel flow data is used to develop modifications to the equation model that take into account near-wall effects. DNS of compressible flows under mean compression are used in testing new compressible modifications to the two-equation models.
Document ID
20020043140
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Mansour, Nagi N. (NASA Ames Research Center Moffett Field, CA United States)
Merriam, Marshal
Date Acquired
August 20, 2013
Publication Date
January 1, 1997
Subject Category
Fluid Mechanics And Thermodynamics
Meeting Information
Meeting: 8th Computational Fluid Mechanics Symposium
Location: Tokyo
Country: Japan
Start Date: July 28, 1997
End Date: July 30, 1997
Sponsors: Japan Society of Fluid Mechanics
Funding Number(s)
PROJECT: RTOP 505-59-53
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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