The unsteady aerodynamic forces and moments are calculated for highly loaded cascade blades oscillating about their mean position with constant interblade phase angle in a uniform incomressible flow. The results show that the blade thickness and the mean flow incidence have significant effects on both the magnitude and phase of the lift and moment. These effects are very sensitive to the interblade phase angle and become stronger with increased cascade stagger. For bending oscillations, the effect of thickness increases the aerodynamic damping, while for torsional oscillations it mainly enhances the in-phase component of the rotational moment. At constant blade loading, no definite trends of variation of the unsteady aerodynamic forces and moments can be established. This indicates a strong coupling between the mean flow incidence and the blade and cascade geometry. (DePo)
Effect of blade loading and thickness on the aerodynamics of oscillating cascades
Wirkung der Tragfluegelbelastung und -dicke auf die Aerodynamik schwingender Kaskaden
AIAA-Papers ; 1-10
1978
10 Seiten, 17 Bilder, 1 Tabelle, 19 Quellen
Conference paper
English
Computational aerodynamics of oscillating cascades with the evolution of stall
Tema Archive | 1987
|TIBKAT | 1977
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