Analysis of Vane Lean Effect for Rotor-stator Interaction

Abstract

Abstract:

The stator with different lean angles was acoustically tested at design condition to get the free field noise spectrum. Besides, the broadband and tone part were extracted from the spectrum. Then, the stator with three lean angles was employed for numerical study to obtain the wake evolution of the rotor and the RMS pressure at the surface of the rotor. The results indicate that the stator with different lean angles can change the phase of the wake of the rotor. The first harmonic of tone noise causes the difference in the total SPL, and the stator with the backward lean angle has a better tone noise reduction effect than the forward one both for the tone SPL and total SPL.

Key words: rotor-stator interaction, broadband noise, tone noise, phase

CLC Number:

TK 472

LIU Haijiana,OUYANG Huaa,TIAN Jiea,WU Yadongb,DU Zhaohuia. Analysis of Vane Lean Effect for Rotor-stator Interaction[J]. Journal of Shanghai Jiaotong University, 2013, 47(11): 1783-1789.

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