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TECHNICAL PAPERS: Gas Turbines: Combustion and Fuel

Industrial Trent Combustor—Combustion Noise Characteristics

[+] Author and Article Information
Thomas Scarinci, John L. Halpin

Rolls-Royce Canada, 9545 Cote-de-Liesse, Dorval, Quebec, Canada H9P 1A5

J. Eng. Gas Turbines Power 122(2), 280-286 (Jan 03, 2000) (7 pages) doi:10.1115/1.483207 History: Received March 09, 1999; Revised January 03, 2000
Copyright © 2000 by ASME
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References

Figures

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Typical operating envelopes for the industrial Trent combustor (ISO day)
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Noise amplitude contour map near 50 percent power
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Noise amplitude contour map near 80 percent power
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Noise amplitude contour map near 100 percent power
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Non-dimensional representation of the measured combustion noise amplitudes and frequencies
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Typical (calculated) heat release and temperature distribution along the length of the combustor for each of the unstable longitudinal acoustic modes. x/L=1 corresponds to the combustor exit.
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Change in acoustic mode and noise amplitude as the combustor fuel split is varied at a steady engine operating condition
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Amplitude characteristics of the 2nd unstable mode (L/λ=0.5). The data in this figure are obtained at engine power levels ranging from 50 percent to 100 percent power.
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Industrial Trent combustor
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Primary weak extinction characteristics
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Amplitude characteristics of the 3rd unstable mode (L/λ=0.75). The data in this figure are obtained at engine power levels ranging from 30 percent to 100 percent power.
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Comparison between predictions and engine results during slow engine acceleration to baseload, at two different ambient conditions. The lines represent the prediction, whereas the symbols represent the engine data.

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