Extensive characterization of a high Reynolds number decelerating boundary layer using advanced optical metrology

Abstract

An experiment conducted in the framework of the EUHIT project and designed to characterize large scale structures in an adverse pressure gradient boundary layer flow is presented. Up to 16 sCMOS cameras were used in order to perform large scale turbulent boundary layer PIV measurements with a large field of view and appropriate spatial resolution. To access the span-wise / wall-normal signature of the structures as well, stereoscopic PIV measurements in span-wise/wall-normal planes were performed at specific stream-wise locations. To complement these large field of view measurements, long-range micro-PIV, time resolved near wall velocity profiles and film-based measurements were performed in order to determine the wall-shear stress and its fluctuations at some specific locations along the model.

arXiv comment50 pages

References in corpus (2)

• Direct numerical simulation of turbulent channel flow up to $R{e}_{\tau }\approx 5200$
• Direct Numerical Simulation of a separated channel flow with a smooth profile

Cited by in corpus (3)

• Reynolds-number effects on the outer region of adverse-pressure-gradient turbulent boundary layers
• Distortion correction of two-component - two-dimensional PIV using a large imaging sensor with application to measurements of a turbulent boundary layer flow at $R{e}_{\tau }=2386$
• Investigation of Large Scale Motions in Zero and Adverse Pressure Gradient Turbulent Boundary Layers Using High-Spatial-Resolution PIV