Axial compressor blading

Details Axial compressor blading Axial compressor blading

2008-04-08

2008-04-08

Nguyen, Ninh H. (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

C415S211200, C415S914000, C416S19300A

Reexamination Certificate

active

11504697

ABSTRACT:
An axial compressor has at least one circumferential row of aerofoil members (30a, 30b, 30c) in which at least one of the two end walls (37) between adjacent blades is given a non-axisymmetric profile, defined by circumferentially-extending sinusoids at a number of axial positions (AA, BB, CC). Corresponding points on the successive sinusoids are joined by spline curves, so that the curvature of the end wall is smooth. This end-wall profiling modifies the boundary layer flow at the wall, reducing or eliminating the corner separation and reversed flow associated with known arrangements.

REFERENCES:
patent: 2918254 (1959-12-01), Hausammann
patent: 6283713 (2001-09-01), Harvey et al.
patent: 6561761 (2003-05-01), Decker et al.
patent: 7134842 (2006-11-01), Tam et al.
patent: 7220100 (2007-05-01), Lee et al.
patent: 2004/0013520 (2004-01-01), Guemmer
patent: 2 388 162 (2003-11-01), None

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