The features of linear performance diagnostic methods are discussed, in comparison to methods based on full nonlinear calculation of performance deviations, for the purpose of condition monitoring and diagnostics. First, the theoretical background of linear methods is reviewed to establish a relationship to the principles used by nonlinear methods. Then computational procedures are discussed and compared. The effectiveness of determining component performance deviations by the two types of approaches is examined, on different types of diagnostic situations. A way of establishing criteria to define whether nonlinear methods have to be employed is presented. An overall assessment of merits or weaknesses of the two types of methods is attempted, based on the results presented in the paper.
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January 2005
Technical Papers
Comparison of Linear and Nonlinear Gas Turbine Performance Diagnostics
Ph. Kamboukos, Research Assistant,
Ph. Kamboukos, Research Assistant
Laboratory of Thermal Turbomachines, National Technical University of Athens, P.O. Box 64069, Athens 15710, Greece
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K. Mathioudakis, Associate Professor
K. Mathioudakis, Associate Professor
Laboratory of Thermal Turbomachines, National Technical University of Athens, P.O. Box 64069, Athens 15710, Greece
Search for other works by this author on:
Ph. Kamboukos, Research Assistant
Laboratory of Thermal Turbomachines, National Technical University of Athens, P.O. Box 64069, Athens 15710, Greece
K. Mathioudakis, Associate Professor
Laboratory of Thermal Turbomachines, National Technical University of Athens, P.O. Box 64069, Athens 15710, Greece
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Atlanta, GA, June 16–19, 2003, Paper No. 2003-GT-38518. Manuscript received by IGTI, October 2002, final revision, March 2003. Associate Editor: H. R. Simmons.
J. Eng. Gas Turbines Power. Jan 2005, 127(1): 49-56 (8 pages)
Published Online: February 9, 2005
Article history
Received:
October 1, 2002
Revised:
March 1, 2003
Online:
February 9, 2005
Citation
Kamboukos, P., and Mathioudakis, K. (February 9, 2005). "Comparison of Linear and Nonlinear Gas Turbine Performance Diagnostics ." ASME. J. Eng. Gas Turbines Power. January 2005; 127(1): 49–56. https://doi.org/10.1115/1.1788688
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