旋转不稳定是压气机工作在高负荷近失速工况时的一种常见现象。研究旋转不稳定在降低压气机工作噪声、减小流致振动以及保障航空发动机稳定工作等方面具有重要意义。首先对旋转不稳定现象进行了回顾，详细讨论了旋转不稳定的特征。其次，重点调研了旋转不稳定的起源和机理，将旋转不稳定产生的原因归纳为叶尖泄漏流、涡脱落以及流动剪切等类别。此外，回顾了模拟旋转不稳定的数值方法，讨论了多种流动控制手段对旋转不稳定的作用效果。最后，对旋转不稳定的研究现状进行了总结，对未来的研究趋势进行了展望。

Rotating instability （RI） can be observed when high-loaded compressors operate at near-stall conditions. Studying RI is of great significance for reducing the working noise of the compressor， mitigating flow-induced vibration， and ensuring stable operation of aircraft engines. This paper reviews the observations of RI and discusses the corresponding features and characteristics. In addition， the origins and the mechanisms of RI are comprehensively studied. The causes of RI are thus classified into blade tip clearance flow， vortex shedding， flow shearing， and other aspects. Furthermore， the numerical approaches in simulating RI are reviewed， and the effects of flow control methods on RI are evaluated. The research progress of RI is finally summarized， and the outlook is further proposed.

V231.3

国家科技重大专项（J2019-I-0011）；国家自然科学基金（52076179）。