EXPERIMENTAL CHARACTERISATION OF LARGE SCALE STRUCTURES IN A HIGH REYNOLDS NUMBER TURBULENT BOUNDARY LAYER etc15 Tracking Number 265Presentation: Session: Wall-bounded flows 2 Room: Room M Session start: 15:00 Tue 25 Aug 2015 Sricharan Srinath srichmech@gmail.com Affifliation: ECLille, LML, F-59650 Villeneuve d’Ascq, France Christophe Cuvier christophe.cuvier@gmail.com Affifliation: USTL, LML, F-59650 Villeneuve d’Ascq, France Jean-Marc Foucaut jean-marc.foucaut@ec-lille.fr Affifliation: ECLille, LML, F-59650 Villeneuve d’Ascq, France Jean-Philippe Laval jean-philippe.laval@univ-lille1.fr Affifliation: CNRS, UMR 8107, F-59650 Villeneuve d’Ascq, France Topics: - Wall bounded flows Abstract: A very large field of view (4δ x 1δ) with a good spatial resolution owing to the use of four 2k x 2k pixel cameras was conducted in a flat plate boundary layer at two Reynolds numbers (Reθ ≈7,500 and 20,000). Comparing the flow statistics with previously obtained hot-wire data under similar flow conditions show good agreement. The goal of this experiment is to detect and characterise the large scale motions which develop in the log region of a high Reynolds number turbulent boundary layer. |