抄録
Experiments have been performed for a turbulent channel flow over a backward-facing step. The backward-facing step flow is controlled by equipping the slit in upstream of the step. Angle of the slit is changed 30° and 45°. The velocity profiles, turbulence intensities and wall shear stress are measured using the split hot film probe and the micro flow sensor. It is found that enhancement of the heat transfer is related to the increase of streamwise velocity and turbulence intensity in the near-wall region.
