Controlled diffusion compressor blade wake measurements
Dreon, John W., Jr.
Shreeve, Raymond P.
MetadataShow full item record
A controlled-diffusion compressor stator blade-element design was re-tested in an academic cascade wind tunnel to obtain data with which to assess viscous computational prediction methods. Tests were conducted near design and toward stall conditions at Mach 0.28 and Reynolds number of 774000. Loss coefficient, diffusion factor and AVDR were determined by mass averaging pneumatic pressure probe survey measurements. Wake velocity profiles were measured from 0.12 to 1.77 chordlengths downstream. Concentration was placed on the verifications of accuracy by careful calibration, multiplicity and exchange of survey probes. Experimental results showed that losses were dependent on Reynolds number and that all blade-element performances were independent of the downstream axial location at which they were determined.
Approved for public release; distribution is unlimited