Unsteady Vortex Structures in the Wake behind Bluff Bodies

Unsteady Vortex Structures in the Wake behind Bluff Bodies

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Unsteady vortex structure in the wake behind bluff body was experimentally investigated by wind tunnel experiment.A flexible rectangular plate, which was made vlone stop snitching shirt of a soft polyurethane block, shows the sway motion and flow-induced vibration caused by fluid force.Phase-averaged vortex structures behind the flexible plate were educed by Particle Image Velocimetry (PIV) using light sensors.

The size of recirculation region and upwash flow in the wake casual azul tequila were influenced by unsteady motion of the plate vibration.