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An experimental investigation of S-duct flow control using arrays of low-profile vortex generatorsAn experimental investigation was undertaken to measure the effect of various configurations of low-profile vortex generator arrays on the flow in a diffusing S-duct. Three parameters that characterize the vortex generator array were systematically varied to determine their effect: (1) the vortex generator height; (2) the streamwise location of the vortex generator array; and (3) the vortex generator spacing. Detailed measurements of total pressure at the duct exit, surface static pressure, and surface flow visualization were gathered for each vortex generator configuration. These results are reported here along with total pressure recovery and distortion coefficients determined from the experimental data. Each array of vortex generators tested improved total pressure recovery. The configuration employing the largest vortex generators was the most effective in reducing total pressure recovery. No configuration of vortex generators completely eliminated the flow separation that naturally occurs in the S-duct, however the extent of the separated flow region was reduced.
Document ID
19930010779
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Reichert, Bruce A. (NASA Lewis Research Center Cleveland, OH, United States)
Wendt, Bruce J. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1993
Subject Category
Aerodynamics
Report/Patent Number
NASA-TM-106030
NAS 1.15:106030
E-7595
Meeting Information
Meeting: Aerospace Sciences Meeting and Exhibit
Location: Reno, NV
Country: United States
Start Date: January 11, 1993
End Date: January 14, 1993
Sponsors: AIAA
Accession Number
93N19968
Funding Number(s)
PROJECT: RTOP 505-62-52
Distribution Limits
Public
Copyright
Public Use Permitted.

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