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Two-dimensional wake characteristics of inlet vanes for open-circuit wind tunnelsThis paper summarizes the near-field flow characteristics measured downstream of a half-scale two-dimensional wind-tunnel model of the inlet vanes designed for the National Full-Scale Facilities Complex at NASA Ames Research Center. Variations on this baseline were tested to determine how the downstream flow field is affected. Evaluations of the various configurations were made by the use of hot-wire surveys across the flow-field. These traverses yielded the properties of total pressure, boundary layers, and turbulence in the wake of the vanes. It was found that large variations in the flow field characteristics downstream of the vanes are achieved by the use of various arrangements of splitter vanes, vortex generators, screens, tail extensions, and honeycomb. Separation on the boat-tails of the vanes can be controlled and turbulence reduced by suitable combinations of screens or honeycomb or both. The penalties associated with each modification in terms of increased pressure loss are also presented.
Document ID
19840042942
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dudley, M. R.
(NASA Ames Research Center Moffett Field, CA, United States)
Unnever, G.
(USAF Wright-Patterson AFB, OH, United States)
Regan, D. R.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 12, 2013
Publication Date
March 1, 1984
Subject Category
Research And Support Facilities (Air)
Report/Patent Number
AIAA PAPER 84-0604
Accession Number
84A25729
Distribution Limits
Public
Copyright
Other

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