2006/12/01 by David Greenblatt, Keith Paschal, Keith B. Paschal +7 · 3 citations
Engineering · #Fluid Dynamics and Turbulent Flows #Plasma and Flow Control in Aerodynamics #Aerodynamics and Acoustics in Jet Flows
paper · doi:10.2514/1.13817
Low-speed flow separation over a wall-mounted hump, and its control using steady suction, were studied experimentally in order to generate a data set for the development and evaluation of computational methods. The baseline and controlled data sets comprised time-mean and unsteady surface pressure measurements, flowfield measurements using particle image velocimetry, and wall shear stress obtained via oil-film interferometry. In addition to the specific test cases studied, surface pressures for a wide variety of conditions were acquired for different Reynolds numbers and suction rates. Stereoscopic particle image velocimetry and oil-film flow visualization indicated that the baseline time-averaged separated flowfield was two-dimensional. With the application of control, mild three-dimensionality was evident in the spanwise variation of pressure recovery, reattachment location, and spanwise pressure fluctuations.