Gas Dynamic Action of Annular Blowing on the Aerodynamic Factors of the Resonance Vibration Excitation of Rotor Blades in a Compressor Stage

摘要

The paper presents the results of a study of the effect of annular blowing ahead of the rotor wheel of an axial compressor stage on the forced vibration excitation of rotor blades. It has been shown that annular blowing smooths the flow velocity field behind the axial compressor stage and reduces the level of vibratory stresses in the root section of the rotor blades.