航空发动机轴流压气机非整阶振动实验研究进展

Overview of experimental research on non-synchronous vibration in aero-engine axial compressor

从非整阶振动的实验、非整阶振动信息获取、非整阶振动机理三个方面进行了概述,总结了近些年对非整阶振动研究的重要成果。平面叶栅和压气机实验台,结合叶尖定时技术和应变片测振及粒子测速(particle image velocimetry,PIV)技术进行非整阶振动的研究,主动控制旋转叶片振动实现流场与叶片振动耦合机理研究等。叶尖定时、应变片、PIV、主动控制叶片振动技术为非整阶振动的研究提供了先进的技术支撑,应用多物理场测试技术获得更加准确的非整阶振动条件下的流场和叶片振动信息。

Important research results of non-synchronous vibration were summarized through its experiment, non-synchronous vibration signal obtaining, and mechanism of non-synchronous vibration.The basic research of non-synchronous vibration,and research on blade tip timing technology combined strain gauge and PIV(particle image velocimetry) to obtain the mechanism of non-synchronous vibration,compressed sensing blade tip timing to capture non-synchronous vibration signal and rotor blade vibration active control to research the coupling mechanism. Blade tip timing technology and strain gauge,PIV and active control blade vibration technology provide advanced brace for non-synchronous vibration phenomenon research. In a long run, multi-physics experimental research will still be a mainstream research method for the non-synchronous vibration.