An analytical investigation of stator lean on rotor-stator interaction noise

作者：Liu, Haijian; Ouyang, Hua^*; Wu, Yadong; Tian, Jie; Du, Zhaohui

来源：Proceedings of the Institution of Mechanical Engineers - Part G: Journal of Aerospace Engineering , 2015, 229(1): 96-109.

DOI：10.1177/0954410014526708

• Rotor-stator interaction
• tone noise
• unsteady loading
• blade passage frequency
• phase

This paper concentrates on the noise reduction effect of stator lean in rotor-stator interaction. The compressor with a serial stator-blade lean angle has been employed to acoustically test and numerically calculate. The experiment results show that stator-leaned positive has better effect on noise reduction than leaned negative; the tone noise is determinant on total sound pressure level, and the lean angle of the stator should exceed 10 degrees. Based on the results of unsteady calculation about the compressor, the amplitude of the unsteady loading of stator decreases with the increase in the lean angle. Leaned positive stator has lower unsteady force and loading than leaned negative. The phase parameters q and pcle of wakes are almost proportionate to the stator-blade lean angle. The distribution of q and phase close-leading edge (pcle) shows that the compressor with 25 degrees and -20 degrees stator-blade lean angles has the maximum and minimum phase variation, respectively.

• 出版日期2015-1
• 单位上海交通大学