Experimental and computational investigation of the endwall flow in a cascade of compressor blades
Carlson, James R.
Hobson, Garth V.
Shreeve, Raymond P.
MetadataShow full item record
An investigation of the three-dimensional flow in a cascade of second-generation controlled-diffusion blades, which was as a result of the interaction of the endwall boundary layers with the blade profiles, is reported. Five-hole probe wake surveys were performed at various spanwise locations to determine the total pressure loss distribution. Downstream velocity vector information was also obtained from the five-hole probe surveys. Two-component laser-Doppler velocimetry (LDV) was used to characterize the flow in the inlet and wake regions. A numerical investigation of the flowfield was conducted using SWIFT, a computational fluid dynamics code developed by Dr. Roderick Chima of NASA Glenn Research Center. Experimental blade-surface pressure coefficients were compared with values predicted using SWIFT. Overall, good correlation between the five-hole probe and LDV measurement techniques was obtained; however, the CFD predictions did not match well with the experimental results, particularly at the midspan location of the blade where separation of the suction surface boundary layer occurred
Approved for public release; distribution is unlimited
Showing items related by title, author, creator and subject.
Chadwick, William Richard (1975-06);Several problems are treated which arise in the study of generalized airforces in unsteady supersonic cascades having subsonic axial velocity. The finite cascade of oscillating wedges is first solved numerically. When ...
An Investigation of the Flow Conditions at the Lower Measuring Plane, and in the Plenum Chamber of the Rectilinear Cascade Test Facility Bartocci, J. E. (Monterey, California. Naval Postgraduate School, 1966-04); Technical Report No. 66T-3This report describes the tests made to determine the flow conditions that exist ahead of the cascade and establishes a basis for future modification of the cascade test facility. The investigation was conducted with ...
Three-component LDV measurements of corner vortices over second-generation, controlled-diffusion, compressor blades in cascade Caruso, Todd M. (Monterey, California. Naval Postgraduate School, 2001-09);A detailed investigation of the three-dimensional flow in a cascade of second-generation controlled-diffusion compressor stator blades, at off-design inlet-flow angle, is reported. Three-component fiber-optic Laser-Doppler ...