Towing tank PIV measurements on 2- and 4-vortex systems IGE
Konrath, Robert and Carmer v., Carl F. (2008) Towing tank PIV measurements on 2- and 4-vortex systems IGE. Project Report. FAR-WAKE TR 3.1.2-2, 22 S.
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The present report is part of the WP 3 “Wake evolution near the ground” of the FarWake project. Experimental investigations were performed in the tow tank at Göttingen to describe spatial-temporal flow evolution of 2- and 4-vortex systems in ground effect (IGE). The F13 model consisting of one or two rectangular wings is used as vortex generator and is towed along a ground plate at specific heights h/b = 0.5, 0.25, 0.125. In case of the 4-vortex system a span width ratio of b2/b1 = 0.3 and circulation ratios of Γ2/Γ1 = ± 0.3 are considered; i.e. co- and counter-rotating vortex pairs. A Stereo Particle Image Velocimetry setup is employed to determine the flow velocity fields in a cross plane. The flow fields are analysed with respect to flow separation at the ground, the generation of secondary vortices, the spatial-temporal development of the vortex trajectories and vortex circulation.
|Document Type:||Monograph (Project Report)|
|Title:||Towing tank PIV measurements on 2- and 4-vortex systems IGE|
|In ISI Web of Science:||No|
|Number of Pages:||22|
|Keywords:||Stereo-PIV, PIV image calibration|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L AR - Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Flight Physics|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Experimental Methods|
|Deposited By:||Ilka Micknaus|
|Deposited On:||01 Dec 2008|
|Last Modified:||27 Apr 2009 14:54|
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