Cinematic particle image velocimetry of high-Reynolds-number turbulent free shear layer

A cinematic particle image velocimetry technique determines the velocity field in a two-stream, high-Reynolds-number turbulent free shear layer. The shear layer shows complex three-dimensional clusters with vortices of both signs. The velocity field has stronger temporal variations and less spatial coherency than that of a passive scalar field. The experiment yields temporal and spatial correlations of the two-dimensional velocity and spanwise vorticity fields.