Abstract
To investigate mixing process with the main stream and behavior of the cooling-air in rotor cascade passages, an experiment was conducted with cooling-air ejection from blade leading-edges of the test cascade which was located downstream of another cascade simulating a stator cascade. In the present experiment, cooling-air was heated higher than the main stream temperature, and the temperature distribution of flow in the test cascade passage was measured in detail by a thermocouple. It was found that the behavior of the cooling-air ejected from the leading-edges were affected significantly by such as pressure gradients and passage vortices in the test cascade and by relative location between the upstream stator cascade and the downstream test rotor cascade.
