This paper presents the experimental study of film cooling jet aerodynamics for a pipe and a converging nozzle injection hole. The pipe jet has a fully developed velocity profile, and the nozzle jet has a top-hat one at the exit of the injection hole. The film cooling jet is injected into a turbulent boundary layer on a fiat plate with 30° inclination angle. The mass flux ratio of the cooling jet to the primary flow is set at 0.8 and 1.2. Three components of mean velocity, vorticity and turbulent kinetic energy are measured using an X-array hot wire anemometer. The kidney vortex from the pipe jet is located closer to the wall than those from the nozzle jet. A tab is also installed at the exit of an injection hole to prevent the primary flow from convoluting. The effect of tab on the pipe jet is explicit.
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