2016•Bulletin of the American Physical SocietyRequires access
Experimental Measurements of a High Reynolds Num- ber Adverse Pressure Gradient Turbulent Boundary Layer
Callum Atkinson, Omid Amili, Michel Stanislas, Christophe Cuvier, Jean-Marc Foucaut, Sricharan Srinath, Jean-Philippe Laval, Christian Kaehler, Rainer Hain, Sven Scharnowski, Andreas Schroeder, Reinhard Geisler, Janos Agocs, Anni Roese, Christian Willert, Joachim Klinner, Julio Soria
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Abstract
The study of adverse pressure gradient turbulent boundary layers is complicated by the need to characterise both the local pressure gradient and it’s upstream flow history. It is therefore necessary to measure a significant streamwise domain at a resolution sufficient to resolve the small scales features. To achieve this collaborative particle image velocimetry (PIV) measurements were performed in the large boundary layer wind-tunnel at the Laboratoire de Mecanique de Lille, including: planar measurements spanning a streamwise domain of 3.5m using 16 cameras covering 15δ; spanwise wall-normal stereo-PIV measurements, high-speed micro-PIV of the near wall region and wall shear stress; and streamwise wall-normal PIV in the viscous sub layer. Details of the measurements and preliminary results will be presented.