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Jet vortex generators for turbulent flow separation controlA parametric study was performed with jet vortex generators to determine their effectiveness in controlling flow separation associated with low speed turbulent flow over a two dimensional rearward-facing ramp. Results indicate that flow separation control can be accomplished with the level of control achieved being a function of jet speed, jet orientation (with respect to the free stream direction), and orifice pattern (double row of jets vs. single row). Compared to slot blowing, jet vortex generators can provide an equivalent level of flow control over a larger spanwise region (for constant jet flow area and speed).
Document ID
19900018343
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Selby, Gregory (Old Dominion Univ. Norfolk, VA., United States)
Lin, J. (NASA Langley Research Center Hampton, VA., United States)
Howard, F. (NASA Langley Research Center Hampton, VA., United States)
Date Acquired
September 6, 2013
Publication Date
September 1, 1990
Subject Category
Aerodynamics
Report/Patent Number
NASA-CR-186959
NAS 1.26:186959
Accession Number
90N27659
Funding Number(s)
CONTRACT_GRANT: NAG1-1071
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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