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Journal of Engineering for Gas Turbines and Power | Volume 128 | Issue 1 | TECHNICAL PAPERS
TECHNICAL PAPERS: Gas Turbines: Aircraft Engine

A Generic Approach for Gas Turbine Adaptive Modeling

[+] Author and Article Information
W. P. Visser

 SKF/Delta Consult, Kapelle, The Netherlandsvisser@deltaconsult.nl

O. Kogenhop

 National Aerospace Laboratory, NLR, Amsterdam, The Netherlandsokogenho@nlr.nl

M. Oostveen

 Delft University of Technology, Delft, The Netherlandsmoostveen@orange.nl

J. Eng. Gas Turbines Power 128(1), 13-19 (Mar 01, 2004) (7 pages) doi:10.1115/1.1995770 History: Received October 01, 2003; Revised March 01, 2004
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For gas turbine engine performance analysis, a variety of simulation tools is available. In order to minimize model development and software maintenance costs, generic gas turbine system simulation tools are required for new modeling tasks. Many modeling aspects remain engine specific however and still require large implementation efforts. One of those aspects is adaptive modeling. Therefore, an adaptive modeling functionality has been developed that can be implemented in a generic component-based gas turbine environment. A single component in a system modeling environment is able to turn any new or existing model into an adaptive model without extra coding. The concept has been demonstrated in the GSP gas turbine modeling environment. An object-oriented architecture allows automatic addition of the necessary equations for the adaptation to measurement values. Using the adaptive modeling component, the user can preconfigure the adaptive model and quickly optimize gas path diagnostics capability using experimentation with field data. The resulting adaptive model can be used by maintenance engineers for diagnostics. In this paper the integration of the adaptive modeling function into a system modeling environment is described. Results of a case study on a large turbofan engine application are presented.
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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

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+GSP model with (top-left) adaptive model control icon
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GSP model with (top-left) adaptive model control icon
Figure 1

GSP model with (top-left) adaptive model control icon

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+Booster running lines for reference (solid) and deteriorated (dashed) engine (case 1)
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Booster running lines for reference (solid) and deteriorated (dashed) engine (case 1)
Figure 2

Booster running lines for reference (solid) and deteriorated (dashed) engine (case 1)

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+HPC running lines for reference (solid) and deteriorated (dashed) engine (case 1)
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HPC running lines for reference (solid) and deteriorated (dashed) engine (case 1)
Figure 3

HPC running lines for reference (solid) and deteriorated (dashed) engine (case 1)

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+GSP adaptive model control component window
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GSP adaptive model control component window
Figure 4

GSP adaptive model control component window

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+Measurements tab sheet
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Measurements tab sheet
Figure 5

Measurements tab sheet

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+Detail of measurement tab sheet
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Detail of measurement tab sheet
Figure 6

Detail of measurement tab sheet

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+Conditions tab sheet
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Conditions tab sheet
Figure 7

Conditions tab sheet

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+Gas path analysis results chart window, case 1
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Gas path analysis results chart window, case 1
Figure 8

Gas path analysis results chart window, case 1

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+Gas path analysis results case 2
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Gas path analysis results case 2
Figure 9

Gas path analysis results case 2

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