Patent ID: 6132174
Filing Date: 2000-10-17
Classification: F01D,F05D,Y02T

Abstract:
A turbine blade comprising:a shank portion, a tip portion and an airfoil;said airfoil having a pressure side wall and a suction side wall interconnected by a plurality of partition sidewalls so as to define an internal cooling passageway within said airfoil;said internal cooling passageway comprising at least one radial outflow passageway to direct a cooling medium flow from said shank portion towards said tip portion and at least one radial inflow passageway to direct a cooling medium flow from said tip portion towards said shank portion; anda plurality of mixing ribs disposed on at least one of said partition sidewalls within said radial outflow passageways so as to enhance the thermal mixing of said cooling medium flow thereby producing improved heat transfer over a range of the Buoyancy number, between about 0.1 to about 1.0.