以GE E3低压涡轮末级为研究对象，采用经过实验验证的流场/声场混合模型对弯曲静叶（-30°~30°）、倾斜静叶（-15°~15°）和部分角度下弯曲/倾斜组合静叶对涡轮气动性能和尾迹干涉单音噪声及位势干涉单音噪声的影响规律进行了研究。同时，从流场和声场角度初步分析了弯曲/倾斜静叶的降噪机制。结果表明：孤立的大弯曲和大倾斜静叶有利于提高涡轮级效率，两者组合静叶甚至可能出现“1+1>2”的效率收益，而相对于尾迹干涉单音噪声，位势干涉单音噪声受静叶弯曲或倾斜的影响更大，取得的降噪收益也更明显；相对于孤立的弯曲或倾斜静叶，弯曲/倾斜组合静叶可以同时实现效率和噪声的双收益，最佳方案为弯曲20°/倾斜10°组合静叶，气动效率提升0.16%，同时获得1.84 dB的降噪收益；弯曲/倾斜静叶对效率的影响主要与二次流损失和叶型损失相关，而对噪声的影响主要与干涉强度和相位变化有关。总的来说，尽管弯曲/倾斜静叶不是新型设计方案，但是弯曲或倾斜静叶具备实现涡轮高效率和低噪声设计的潜力，其物理机制和降噪规律仍然值得开展大量研究，可为未来工程应用提供理论支撑。

The last stage of GE E3 low-pressure turbine is taken as the object of study， and the experimentally validated flow/acoustic field hybrid model is used to investigate the effect of the bend stator （-30°–30°）， the lean stator （-15°–15°）， and the partial combination of the bend/lean stator with serval angles on the aerodynamic performance of the turbine and the influence law of wake interaction tonal noise and potential interaction tonal noise. The physical mechanisms are analyzed in terms of the flow field and the acoustic field. The results are obtained as follows. Isolated large-bending and large-leaning stators are favorable to improving the efficiency of the turbine stage， and the combination may even result in the efficiency gain of “1+1>2”； the potential interaction tonal noise is more affected by the bend or lean of the stator than the wake interaction tonal noise， and the gain of noise reduction is more obvious. Compared to the isolated bend or lean stator， the bend/lean stator can achieve both efficiency and noise gains， and the optimal scheme is the bend 20°/lean 10° stator， which improves the aerodynamic efficiency by 0.16% and obtains a noise reduction gain of 1.84 dB at the same time. The effect of the bend/lean stator on the efficiency is mainly related to the secondary flow and the blade loss， whereas its effect on the noise is mainly related to interaction intensity and phase changes. In conclusion， although the bend/lean stator is not a novel design option， it has the potential to realize a high-efficiency and low-noise design of the turbine； thus， its physical mechanisms and noise reduction laws are still worthy of extensive research， so as to provide theoretical support for future engineering applications.