非自模化和自模化区域内轴流动叶气动-声学性能的实验研究

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

本文通过对非自模化和自模化区域内的两组轴流动叶试验风机的气动－声学性能的实验研究，得到了非自模化和自模化区域内的气动－声学相似性．实验结果表明：几何相似的风机，进入非自模化区域内，其气动－声学性能完全不同，因此必须对其气动－声学相似性理论进行完善和修正。

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.