An Experimental Investigation of Boundary Layer and Heat Transfer in the Region of Separated Flow Downstream of Normal Injection Slots
Keyword(s):
An experimental investigation was conducted to determine the flow characteristics, heat transfer coefficients, and film cooling effectiveness in the region immediately downstream of flush, normal injection slots. Air was injected through these slots into a turbulent primary flow produced by a small wind tunnel. Velocity measurements and tuft studies indicated that there was a significant region of separated flow immediately downstream of the slot. The heat transfer coefficients were appreciably increased as a result of this flow separation, and the film cooling effectiveness was decreased in comparison to previous studies involving no flow separation.