The wakes of highly loaded compressor blades are generally considered to be turbulent flows. Recent work has suggested that the blade wakes are dominated by a vortex streetlike structure. The experimental evidence supporting the wake vortex structure is reviewed. This structure is shown to redistribute thermal energy within the flowfield. The effect of the wake structure on conventional aerodynamic measurements of compressor performance is noted. A two-dimensional, time-accurate, viscous numerical simulation of the flow exhibits both vortex shedding in the wake and a lower-frequency flow instability that modulates the shedding. The numerical results are shown to agree quite well with the measurement from transonic compressor rotors.
Vortex shedding in high-speed compressor blade wakes
1988-06-01
Sonstige
Keine Angabe
Englisch
Vortex shedding in high-speed compressor blade wakes
AIAA | 1988
|Momentum and vortex theory of rotor blade wakes
AIAA | 1996
|