Comparison and Sensibility Analysis of Warning Parameters for Rotating Stall Detection in an Axial Compressor

The present paper aims at evaluating the surveillance parameters used for early stall warning in axial compressors, and is based on unsteady pressure measurements at the casing of a single stage axial compressor. Two parameters—Correlation and Root Mean Square (RMS)—are first compared and their rela...

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Bibliographic Details
Published inInternational journal of turbomachinery, propulsion and power Vol. 5; no. 3; p. 16
Main Authors Margalida, Gabriel, Joseph, Pierric, Roussette, Olivier, Dazin, Antoine
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 07.07.2020
MDPI
Subjects
axial compressor
Compressors
Engineering Sciences
Equipment performance
Flow velocity
Fluid Dynamics
Fluids mechanics
Irregularities
irregularity measurement
Mathematical models
Mechanical properties
Mechanics
Parameters
Physics
rotating stall
Sensors
Throttling
Turbocompressors
Warning
France
rotating stall
axial compressor
irregularity measurement
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Summary:The present paper aims at evaluating the surveillance parameters used for early stall warning in axial compressors, and is based on unsteady pressure measurements at the casing of a single stage axial compressor. Two parameters—Correlation and Root Mean Square (RMS)—are first compared and their relative performances discussed. The influence of sensor locations (in both radial and axial directions) is then considered, and the role of the compressor’s geometrical irregularities in the behavior of the indicators is clearly highlighted. The influence of the throttling process is also carefully analyzed. This aspect of the experiment’s process appears to have a non-negligible impact on the stall warning parameters, despite being poorly documented in the literature. This last part of this research work allow us to get a different vision of the alert parameters compared to what is classically done in the literature, as the level of irregularity that is reflected by the magnitude of the parameters appears to be an image of a given flow rate value, and not a clear indicator of the stall inception.
ISSN:2504-186X
2504-186X
DOI:10.3390/ijtpp5030016