摘要
Compressor instability,particularly stall and surge,poses significant challenges to the performance,efficiency,and reliability of axial compressors in aerospace and power-generation systems.This review comprehensively summarizes the evolution of research on stall precursors,including modal wave,spike,rotating instability,and partial surge.Each pre-cursor exhibits distinct spatial and temporal characteristics linked to specific unsteady flow structures such as tip leakage vortex breakdown,hub corner separation,and shock-boundary layer interactions.The transformation of stall precursors under varying design parameters and operating conditions is analyzed,with a focus on how radial loading distribution,tip clear-ance,and inlet distortion influence instability behavior.Future directions are proposed,empha-sizing the development of unified theoretical models,accelerated numerical methods,and full-annulus experiments to enhance stall prediction and active control strategies.
