초록
The effects of injection angles between $0^{\circ}$ and $9^{\circ}$, mainstream turbulent intensities between 0.36 percent and 9.3 percent and embedded longitudinal vortices on jets issuing from a single film cooling hole and from a row of inclined holes are investigated. The heat transfer coefficients around film cooling holes are affected greatly by the compound injection angles. The injected jets affected weakly by the freestream turbulence at low level. However, the heat transfer coefficients near the film cooling holes have higher values at a high turbulence intensity. The vortices generated from a delta winglet change the injected jet direction and the kidney-type vortex pattern.
