Turbulent Boundary Layers Disturbed by Two-dimensional Bluff Bodies : Characteristics of Turbulence

抄録

Presented in this paper are the results of an experimental investigation of a two-dimensional turbulent boundary layer disturbed by a rectangular cylinder attached to a smooth plane wall with the axis normal to the direction of the main flow. Turbulent energy, turbulent shear stress, probability density of fluctuating velocities, spectra of stream-wise turbulent energy, intermittecy factor, correlation function and integral scales of turbulent eddies are measured in detail with constant-temperature hot-wise anemometers. The main features of the disturbed turbulent boundary layers are also discussed in comparison with those of equilibrium turbulent boundary layers.