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Measurements of the flow around a lifting-wing/body junctionDetailed measurements of all three mean velocity components and five of the six Reynolds stresses have been made around a model of a lifting-wing/body junction. The body was the flat working section floor of a small blower wind tunnel. Measurements of the surface pressure distribution on the NACA 0012 wing showed that the lift coefficient at the body surface was reduced by only 16 percent from the freestream value. It is shown that the near constancy of the bound vorticity requires the formation of aixal vorticity within the body boundary layer. This vorticity was concentrated in the two legs of the necklace vortex formed near the leading edge of the wing. The magnitude of the vorticity was always greater in the leg that developed on the suction surface. By four chord lengths downstream of the trailing edge, the turbulence structure of the suction leg was qualitatively similar to that of a single vortex imbedded in a turbulent boundary layer.
Document ID
19920038102
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Wood, D. H.
(NASA Ames Research Center Moffett Field, CA, United States)
Westphal, R. V.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Publication Information
Publication: AIAA Journal
Volume: 30
ISSN: 0001-1452
Subject Category
Aerodynamics
Accession Number
92A20726
Distribution Limits
Public
Copyright
Other

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