Flow Structures Downstream of Square-shaped Cylinder in Channel

Experiments were conducted to investigate the flow topology downstream of a square-shaped cylindersituated in a straight channel. The critical parameters such as the Reynolds number (Re = 500) and theblockage ratio of the square-shaped cylinder (25%) were determined in light of the literature. A Particleimage velocimetry (PIV) system was used to obtain the instantaneous velocity vector map. The flowstructures, including the time-mean vorticity distribution, <?> instantaneous and time-mean streamlinetopology, ?, distributions of streamwise velocity fluctuations, urms, turbulent kinetic energy, TKE arepresented with Figures.