This paper presents a method for estimating compressor stall margin and the results of applying the estimation technique to an axial compressor rig. Stall margin estimation is accomplished through the use of a compressor stability detection parameter called the “correlation measure.” The correlation measure captures the periodicity of the pressure in the rotor tip region of the compressor. The downcrossing frequency of the correlation measure across some preset threshold is measured while operating the compressor rig at various steady-state points along the design speed characteristic line. These measurements are used to generate a relationship with stall margin as a function of downcrossing frequency. The estimation technique is evaluated by applying it while dynamically ramping the operating point of the compressor up the design speed line towards surge. A brief investigation on the effects of inlet distortions on the correlation measure-based estimation system is also given.
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January 2012
Research Papers
Correlation Measure-Based Stall Margin Estimation for a Single-Stage Axial Compressor
Manuj Dhingra,
Manuj Dhingra
School of Aerospace Engineering, GA Institute of Technology
, 270 Ferst Drive, Atlanta, GA 30332
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J. V. R. Prasad
J. V. R. Prasad
School of Aerospace Engineering, GA Institute of Technology
, 270 Ferst Drive, Atlanta, GA 30332
Search for other works by this author on:
Manuj Dhingra
School of Aerospace Engineering, GA Institute of Technology
, 270 Ferst Drive, Atlanta, GA 30332
J. V. R. Prasad
School of Aerospace Engineering, GA Institute of Technology
, 270 Ferst Drive, Atlanta, GA 30332J. Eng. Gas Turbines Power. Jan 2012, 134(1): 011603 (9 pages)
Published Online: November 7, 2011
Article history
Received:
April 25, 2011
Accepted:
May 3, 2011
Online:
November 7, 2011
Published:
November 7, 2011
Citation
Liu, Y., Dhingra, M., and Prasad, J. V. R. (November 7, 2011). "Correlation Measure-Based Stall Margin Estimation for a Single-Stage Axial Compressor." ASME. J. Eng. Gas Turbines Power. January 2012; 134(1): 011603. https://doi.org/10.1115/1.4004177
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