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An Isolated Circular Synthetic Jet in Cross-Flow at Low Momentum-Flux RatioA joint experimental and computational investigation was carried out for a round synthetic jet issuing normal to a turbulent boundary layer at a momentum-flux ratio of one. Distributions of velocity and turbulence intensity were measured by hot-wire anemometry. Numerical results were obtained using unsteady Reynolds-averaged Navier-Stokes (URANS) computations. Time and phase-averaged flow properties were compared on the cross sectional plane at x/D = 0.53, 5 and 10 as well as on the axial plane of symmetry. Overall, the numerical results agreed well with the experimental data. CFD predicted a somewhat larger velocity deficit in regions of low-momentum fluid pulled up from the boundary layer. Phase- averaged velocity contours at the plane of symmetry indicated good match between experiments and CFD regarding the size and the position of the periodic flow structure. However, some differences occurred in details such as the shape and inclination of the low-speed flow structure.
Document ID
20050060619
Acquisition Source
Glenn Research Center
Document Type
Preprint (Draft being sent to journal)
Authors
Milanovic, Ivana M.
(Hartford Univ. CT, United States)
Zaman, Khairul B. M. Q.
(NASA Glenn Research Center Cleveland, OH, United States)
Rumsey, Christopher L.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2005
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
E-14990
AIAA Paper 2005-1110
Meeting Information
Meeting: 43rd AIAA Aerospace Sciences Meeting and Exhibit
Location: Reno, NV
Country: United States
Start Date: January 10, 2005
End Date: January 13, 2005
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
OTHER: 22-781-30-47
Distribution Limits
Public
Copyright
Public Use Permitted.
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