Airfoil Assembly with Paired Endwall Contouring

摘要

An airfoil assembly is disclosed. The airfoil assembly may comprise a series of airfoils such as vanes radially extending between an ID endwall and a substantially concentric OD endwall. The airfoils are circumferentially spaced apart and define a plurality of fluid flow passages between adjacent airfoils. The ID endwall and the OD endwall define contoured regions to optimize fluid flow through the passages. A geometric relationship between the ID endwall contoured regions and the OD endwall contoured regions assures that the throat area generally increases or decreases in the direction of fluid flow.

主权项

1. An airfoil assembly comprising:
an ID endwall having a surface; an OD endwall having a surface, the ID endwall and the OD endwall being concentric about a center line; and a pair of airfoils projecting radially outward from the ID endwall and terminating at the OD endwall, each airfoil having a leading edge, a trailing edge and a first side and an opposite second side extending substantially axially between the leading edge and the trailing edge, the airfoils being circumferentially spaced apart; wherein the ID endwall, the OD endwall and the airfoils define a fluid flow passage; and wherein the surfaces of the ID endwall and the OD endwall define contoured regions.