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

Abstract

Streamwise/wall-parallel volumes of a turbulent boundary layer at Reθ=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 techniq..