Initial circulation and peak vorticity behavior of vortices shed from airfoil vortex generators

Original publisher: [Cleveland, Ohio] : National Aeronautics and Space Administration, Glenn Research Center ; Hanover, MD : Available from NASA Center for Aerospace Information, [2001] OCLC Number: (OCoLC)55049891 Excerpt: ... degrees degrees 90 90 80 80 100 100 110 110 0.0 0.0 1.0 1.0 2.0 ( d / 2-r ) cms ( d / 2-r ) cms 30 m / sec 30 m / sec data model Figure 3-A comparison of the secondary velocity field of an embedded vortex; data on the left, and a model constructed from the superposition of Lamb vortices on the right. Main Plenum Test Section Duct Exhaust Region Fiberglass Bellmouth Contraction vacuum exhaust line ambient air in coarse mesh honeycomb flow plug valve fine mesh Conical Diffuser Circular Aperture Flange Figure 4-The Internal Fluid Mechanics Facility of NASA Glenn Inlet Pipe Vortex Generator Duct Instrumentation Duct Motor and Gearbox Radial Actuator Movable Blocks for Axial Positioning of Radial Actuator Static Taps Flow Seven-Hole Probe Rake 9 Vortex Generators and Plugs Access Hatches Figure 5-A cut-away sketch of the test section duct. NASA / CR - 2001-211144 11