Patent ID: 6669445
Filing Date: 2003-12-30
Classification: F01D,Y02T,Y10S

Abstract:
A flow directing assembly for use in a rotary machine comprising:a plurality of blades, each said blade having an airfoil and a platform; a plurality of flow passages defined by said airfoils of said blades; each of said flow passages having an inner endwall defined by platforms of adjacent ones of said blades; said inner endwall of each said flow passage having means for minimizing shock effects within and aft of each of said flow passages; said shock effect minimizing means comprising a non-axisymmetric trough which extends from a point within said flow passage to a point aft of said flow passage; and said trough having an initial amplitude at a location adjacent a leading edge portion of said flow passage, a maximum amplitude adjacent a flow passage throat axial location, and a final amplitude at a downstream extent of said platform and wherein said initial and final amplitudes are less than said maximum amplitude.