AN EXPERIMENT ON AERODYNAMIC-AEROACOUSTIC PERFORMANCE OF ROTOR BLADING IN NON-SELF-STIMULATED AND SELF-STIMULATED DOMAIN

The experiments of aerodynamic-aeroacoustic performance in axial fans in non-self-stimulated and self-stimulated domain are carried out. Compare enlarged model fans in self-stimulated domain and small-scale fans in non-self-stimulated domain, their aerodynamic-aeroacoustic performances are not almost similar, So aerodynamic-aeroacoustic similarity are perfected and revised. The corrected formula of similarity are obtained. Testing shows that fans with skewed-swept rotating blades in non-self-stimulated domain has advantages of high-refficiency and low-noise.