EXPERIMENTAL STUDY ON TURBULENT CHARACTERISTICS UNDER BUCKET ENERGY DISSIPATORS BY USING A 2-D LDA SYSTEM

Turbulence measurements downstream of an energy dissipators, including the rever.se flow region were performed using a two-dimensional Laser Doppler Anemometer (2-D LDA). The mean velocity distributions, turbulence intensities and Reynolds shear stresses were revealed in and around the separated shear layer and recirculation region. The patterns of the streamlines were calculated and drawn, and then, the reattachtnent properties were stu-died varying with Froude numbers. Finally, the transition process of t...