Turbine blade comprising turbulation promotion devices

摘要

A turbine blade (10) having improved cooling has an airfoil (13) with a root end (16) and a tip end (18) and at least one cooling passageway (14) in the airfoil (13). Each cooling passageway (14) extends from the root end (16) to the tip end (18) and has a circular cross-section. A plurality of turbulation promotion devices (36) are arranged in each cooling passageway (14). Each of the turbulation promotion devices (36) is arcuate in shape and circumscribes an arc less than 180 degrees.