Measurements were taken of the vortex system and turbulent flow that resulted from the interaction between a stator blade and the approaching endwall boundary layer in a linear cascade of compressor blades. Data were taken at a Reynolds number based on blade chord of 640,000. Five-hole pressure measurements were conducted upstream and downstream of the blade row. The approaching boundary layer was also characterized with the laser-Doppler velocimeter. Downstream three-component laser-Doppler velocimetry surveys were conducted at three streamwise stations to map the location and velocity characteristics of the wake and vortex system. Results clearly showed the extent of the vortex emanating from the separation of the boundary layer on the suction side of the blade. Finally, all components of mean flow velocity and turbulence are documented for the last survey station. These data will form a challenging test case for numerical code validation.

Issue Section:
Research Papers
Keywords:
flow separation, wakes, vortices, boundary layer turbulence, blades, stators, turbomachinery, Doppler measurement, laser velocimetry
Topics:
Blades, Cascades (Fluid dynamics), Compressors, Flow (Dynamics), Flow separation, Pressure, Turbulence, Vortices, Wakes, Chords (Trusses), Suction, Stators, Probes
1.
Dong
,
Y.
,
Gallimore
,
S. J.
, and
Hodson
,
H. P.
, 1987, “
Three-Dimensional Flows and Loss Reduction in Axial Compressors
,”
ASME J. Turbomach.
0889-504X,
109
, pp.
354
–
361
.
Crossref
Search ADS
 
2.
Enomoto
,
S.
,
Hah
,
C.
, and
Hobson
,
G. V.
, 2000, “
Numerical and Experimental Investigation of Low Reynolds Number Effects on Laminar Flow Separation and Transition in a Cascade of Compressor Blades
,” ASME Paper No. 2000-GT-0276.
3.
Gregory-Smith
,
D. G.
, and
Graves
,
C. P.
, 1983, “
Secondary Flow and Losses in a Turbine Cascade
,”
AGARD Conference Proceedings No. 351 on Viscous Effects in Turbomachines
,
Copenhagen, Denmark
.
4.
Moore
,
J.
, and
Adhye
,
R. Y.
, 1985, “
Secondary Flows and Losses Downstream of a Turbine Cascade
,”
ASME J. Eng. Gas Turbines Power
0742-4795,
107
(
4
), pp.
961
–
968
.
Crossref
Search ADS
 
5.
Moore
,
J.
,
Schaffer
,
D. M.
, and
Moore
,
J. G.
, 1987, “
Reynolds Stresses and Dissipation Mechanisms Downstream of a Turbine Cascade
,”
ASME J. Turbomach.
0889-504X,
109
, pp.
258
–
267
.
Crossref
Search ADS
 
6.
Lasser
,
R.
, and
Rouleau
,
W. T.
, 1983, “
Measurements of Secondary Flow Within a Cascade of Curved Blades and in the Wake of the Cascade
,” ASME Paper No. 83-GT-24.
7.
Malak
,
M. F.
,
Hamed
,
A.
, and
Tabakoff
,
W.
, 1987, “
Three-Dimensional Flow Field Measurements in a Radial Inflow Turbine Scroll Using LDV
,”
ASME J. Turbomach.
0889-504X,
109
, pp.
163
–
169
.
Crossref
Search ADS
 
8.
Chesnakas
,
C. J.
, and
Dancey
,
C. L.
, 1990, “
Three-Component LDA Measurements in an Axial-Flow Compressor
,”
J. Propul. Power
0748-4658,
6
, pp.
474
–
481
.
Crossref
Search ADS
 
9.
Pasin
,
M.
, and
Tabakoff
,
W.
, 1993, “
Laser Measurements of the Flow Field in a Radial Turbine Rotor
,” AIAA Paper No. 93-0156.
10.
Stauter
,
R. C.
, 1992, “
Measurement of the Three-Dimensional Tip Region Flow Field in an Axial Compressor
,” ASME Paper No. 92-GT-211.
11.
Doukelis
,
A.
,
Mathioudakis
,
K.
,
Founti
,
M.
, and
Papailiou
,
K.
, 1997, “
3-D LDA Measurements in an Annular Cascade for Studying Tip Clearance Effects
,” AGARD CP-598, Advanced Non-Intrusive Instrumentation for Propulsion Engines, Brussels.
12.
Skoch
,
G. J.
,
Prahst
,
P. S.
,
Wernet
,
M. P.
,
Wood
,
J. R.
, and
Strazisar
,
A. J.
, 1997, “
Laser Anemometer measurements of the Flow Field in a 4:1 Pressure Ration Centrifugal Impeller
,” ASME Paper No. 97-GT-342.
13.
Delery
,
J.
, and
Meauze
,
G.
, 2003, “
A Detailed Experimental Analysis of the Flow in a Highly Loaded Fixed Compressor Cascade: The ISO-Cascade Co-Operative Programme on Code Validation
,”
Aerosp. Sci. Technol.
1270-9638,
7
(
1
), pp.
1
–
9
.
Crossref
Search ADS
 
14.
Hobson
,
G. V.
,
Hansen
,
D. J.
,
Schnorenberg
,
D. G.
, and
Grove
,
D. V.
, 2001, “
Effect of Reynolds Number on Separation Bubbles on Controlled-Diffusion Compressor Blades in Cascade
,”
J. Propul. Power
0748-4658,
17
(
1
), pp.
154
–
162
.
Crossref
Search ADS
 
15.
Hobson
,
G. V.
, and
Shreeve
,
R. P.
, 1993, “
Inlet Turbulence Distortion and Viscous Flow Development in a Controlled-Diffusion Compressor Cascade at Very High Incidence
,”
J. Propul. Power
0748-4658,
9
(
3
), pp.
397
–
407
.
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 by American Society of Mechanical Engineers
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