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Emmons spot forcing for turbulent drag reductionAn Emmons spot-generation wind tunnel system has been designed to trigger closely spaced Emmons spots in the spanwise and longitudinal directions of an aerodynamic surface. For certain combinations of generator frequencies and amplitude, hole size, and hole spacing, experimental results indicate smaller turbulence scales and a reduction in skin friction of about 15 percent.
Document ID
19850036547
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Goodman, W. L. (NASA Langley Research Center High-Speed Aerodynamics Div., Hampton, VA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: AIAA Journal
Volume: 23
ISSN: 0001-1452
Subject Category
Aerodynamics
Accession Number
85A18698
Distribution Limits
Public
Copyright
Other

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