Vortex organization in outer region of turbulent boundary layer

The structure of energy containing turbulence in the outer region of a zero-pressure gradient boundary layer has been studied using particle image velocimetry (PIV) to measure the instantaneous velocity fields in a streamwise-wall-normal plane. Experiments performed at three Reynolds numbers between 930 0) that occur on a locus inclined at 30-60° to the wall.National Science Foundation; Office of Naval Researchearc