Tomographic Particle Image Velocimetry Measurements of a High Reynolds Number Turbulent Boundary Layer

Abstract

AbstractStreamwise/wall-parallel volumes of a turbulent boundary layer at Re θ =7800 and 11800 are measured using a 4 camera (2048×2048 px) tomographic particle image velocimetry (Tomo-PIV) system in the turbulent boundary layer wind tunnel at the Laboratoire de Mécanique de Lille (LML). A measurement volume of 1200×180×1200 voxels was achieved, the large boundary layer provided by this tunnel (δ≈0.3 m) resulting in measurements volumes of 470+×70+×470+ and 920+×140+×920+, respectively. Volumes were reconstructed using both the standard MART algorithm and the accelerated MLOS-SMART approach (Atkinson and Soria in Exp. Fluids 47(4–5):553–568, 2009). The quality of the data acquired by these two techniques is assessed based on the mean velocity profiles, velocity fluctuations and velocity power spectra.KeywordsParticle Image VelocimetryTurbulent Boundary LayerLight SheetStereoscopic Particle Image VelocimetryTomographic Particle Image VelocimetryThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.