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A new coordinate transformation for turbulent boundary layer flowsThe transformation permits a uniform mesh to be used in the computational coordinate which extends across the layer. This coordinate transformation uses the local value of the skin friction coefficient to scale the thickness of the wall layer region, and the local maximum value of turbulent viscosity to scale the boundary-layer thickness. Results are presented for two dimensional boundary layers in both positive and negative pressure gradients and comparisons are made with experimental data and conventional variable-grid results for low speed turbulent boundary-layers. The cases chosen illustrate the capability of this new transformation to capture the boundary layer growth over the full extent of laminar, transitional, and turbulent flow with no grid adjustment as well as its ability to consistently enlarge the wall layer region for accurate shear stress representation. Results of mesh refinement studies using the new coordinate transformation are presented.
Document ID
19810006188
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Carter, J. E.
(United Technologies Corp. East Hartford, CT, United States)
Edwards, D. E.
(United Technologies Corp. East Hartford, CT, United States)
Werle, M. J.
(United Technologies Corp. East Hartford, CT, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1980
Publication Information
Publication: NASA. Langley Research Center Numerical Grid Generation Tech.
Subject Category
Numerical Analysis
Accession Number
81N14702
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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