Experienced Investigation of Rotating Stall in a Single-Stage Axial Compressor

S. Jonnavithula, F. Sisto, S. Thangam

Research output: Contribution to journalArticlepeer-review

Abstract

The phenomenon of rotating stall appears in compressors operating under severe loading at off design points. This causes undesirable loss of performance and the resulting periodic loading on the blades leads to noise, vibration and possibly fatigue failure. In this study, an experimental investigation of rotating stall was conducted using the Stevens axial compressor test rig. The occurrence of rotating stall in this single stage research compressor was demonstrated, and experimental studies were conducted of the effect of the various flow parameters on the propagation velocity. Hot-wire anemometry combined with digital data acquisition and ensemble averaging procedures were used to obtain detailed information on the velocity field throughout the radial extent of the stall cell. It was found that at the high rotor stagger angle used in the experiment, the stall propagation velocity increased with relative inflow angle, in agreement with the computed results. The velocity was also found to decrease with the flow coefficient, in agreement with previous experimental results from the literature. The trends predicted by the experiments are also shown to be in agreement with the computational results for stationary, periodic linear cascades.

Original languageEnglish
Pages (from-to)49-66
Number of pages18
JournalInternational Journal of Turbo and Jet Engines
Volume9
Issue number1
DOIs
StatePublished - 1992

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