An aerodynamic instability known as stall occurs in axial compressors as the mass flow rate
is reduced and the blade loading reaches its limit. At this limiting condition, an easily …

▪ Abstract The compression system instabilities known as surge and rotating stall are natural
limits to the performance of all compressors and are especially troubling in gas turbine …

A computational study to define the phenomena that lead to the onset of short length-scale
(spike) rotating stall disturbances has been carried out. Based on unsteady simulations, we …

Mass injection upstream of the tip of a high-speed axial compressor rotor is a stability
enhancement approach known to be effective in suppressing stall in tip-critical rotors. This …

A computational study to define the phenomena that lead to the onset of short length-scale
(spike) rotating stall disturbances has been carried out. Unsteady simulations show there …

These lecture notes were presented at the von Karman Institutes lecture series on Advances
in Axial Compressor Aerodynamics, May 2006. They provide a fairly extensive overview of …

Experiments that demonstrate the use of endwall recirculation to control the stall of transonic
compressor stages are described. Endwall recirculation of a compressor stage is …

This paper presents the first attempt to stabilize rotating stall in a single-stage transonic axial
flow compressor with inlet distortion using active feedback control. The experiments were …

Computational fluid dynamics calculations using high-performance parallel computing were
conducted to simulate the prestall flow of a transonic compressor stage, NASA compressor …

Safely operating compressors is quite critical. Rotating stall is highly undesirable and affects
negatively the performance and stability of aero-engine compressors. It is important to …