WALL CONFIGURATION OF AXIAL-FLOW MACHINE, AND GAS TURBINE ENGINE

摘要

A wall configuration of an axial-flow machine which can reduce the secondar y flow loss is provided. A trough (40) is formed between a blade (14) and another blade in the blade row (30) and extends in at least an axial direction of the blad e row (30). The region where the trough (40) is formed is axially between a leading edge (20) and a trailing edge (21) of the blade (14). A center line of the trough has a curvature in the same direction as a camber line (22) of the blade (40). A maximum amplitude of the trough (40) is located adjacent to an axial center of the blade (14) or located axially between the axial center and the leading edge (21) of the blade (14).