HOT WIRE MEASUREMENT OF TURBULENT BOUNDARY LAYER ON A FILM COOLING PLATE WITH DIFFUSION HOLES

摘要

This study experimental investigated the film cooling flowfield of a single row of diffusion holes, from which the secondary air flow was injected into a turbulent boundary layer with zero pressure gradient on a flat plate. Circular-shaped holes were also tested as a basis for compari- Son. All the holes were inclined downstream at 35 deg. With re- Spect to the surface and the lateral spacing between the holes Was 3 diameters of the hole.