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Near-wall modeling of compressible turbulent flowA near-wall two-equation model for compressible flows is proposed. The model is formulated by relaxing the assumption of dynamic field similarity between compressible and incompressible flows. A postulate is made to justify the extension of incompressible models to ammount for compressibility effects. This requires formulation the turbulent kinetic energy equation in a form similar to its incompressible counterpart. As a result, the compressible dissipation function has to be split into a solenoidal part, which is not sensitive to changes of compressibility indicators, and a dilatational part, which is directly affected by these changes. A model with an explicit dependence on the turbulent Mach number is proposed for the dilatational dissipation rate.
Document ID
19910016051
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
So, Ronald M. C. (Arizona State Univ. Tempe, AZ, United States)
Date Acquired
September 6, 2013
Publication Date
June 30, 1991
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NASA-CR-188608
NAS 1.26:188608
Accession Number
91N25365
Funding Number(s)
CONTRACT_GRANT: NAG1-1080
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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