Abstract The operating range of a compressor is limited by surge or rotating stall line, among others. Numerical simulations must accurately predict these phenomena. This study based on the experimental CME2, which low-subsonic axial compressor. tip-critical as rotor tip responsible for stall. paper shows that onset flow rate well captured computational fluid dynamics, compared to experiments. ...

Abstract This study is to investigate the stall flutter of high-speed rotating blade section small-scale blades subjected combined flap-lag motion. The work motivated by destructive flapwise vibrations blades. aeroelastic governing equations combine a spring-mass-damper equivalent structure and nonlinear aerodynamic model suitable for pure pitching resulting are solved linearization time-marchi...

This tutorial explains the surge phenomenon as well as the precursors of surge and the damage that surge can cause to the equipment. Then, methods to keep the compressor system from surge, i.e., modern surge control systems, are discussed. This includes the necessary instruments, algorithms used, as well as the piping layout required. Sizing considerations for valves and other system components...

On many occasions, fan or compressor stages have to face azimuthal flow distortion at inlet, which affects their performance and stability. These distortions can be caused by external events some particular geometrical features. The aim of this work is propose a joined numerical experimental analysis the behavior in single axial stage under distortion. are generated different grids that placed ...