Spanwise wall oscillation as a drag reduction technique: PIV-based evaluation of turbulent skin-friction drag reduction over a flat plate by spanwise wall oscillation

Reduction of skin-friction drag over a fully developed canonical zero-pressure gradient turbulent boundary layer (ZPGTBL) subjected to spanwise oscillation is measured using planar particle image velocimetry (PIV). The experiments are conducted at Re_θ of 1000 and 1800, the chosen range of spanwise oscillations amplitude and frequency...