Turbine airfoil with internal cooling

摘要

The flow of cooling fluid through core tie holes formed between the internal cooling passageways (120-124, 128, 132) of turbine airfoils (112) is reduced by disposing flow deflectors (144) on the wall (136-141) adjacent to the holes (142). The deflectors (144) alter the local static pressure near the holes (142), thereby minimizing the pressure differential across the holes (142) so as to reduce the flow of cooling fluid.