0
TECHNICAL PAPERS: Gas Turbines: Combustion and Fuels

The Effect of Fuel/Air Mixing on Actuation Authority in an Active Combustion Instability Control System

[+] Author and Article Information
J. M. Cohen, J. H. Stufflebeam, W. Proscia

United Technologies Research Center, East Hartford, CT 06108

J. Eng. Gas Turbines Power 123(3), 537-542 (Oct 01, 2000) (6 pages) doi:10.1115/1.1373399 History: Received October 01, 1999; Revised October 01, 2000
Copyright © 2001 by ASME
Your Session has timed out. Please sign back in to continue.

References

Hibshman, J. R., Cohen, J. M., Banaszuk, A., Anderson, T. J., and Alholm, H. A., 1999, “Active Control of Combustion Instability in a Liquid-Fueled Sector Combustor,” ASME Paper 99-GT-215, International Gas Turbine and Aeroengine Congress & Exposition, Indianapolis, IN, June.
Cohen,  J. M., Rey,  N. M., Jacobson,  C. A., and Anderson,  T. J., 1999, “Active Control of Combustion Instability in a Liquid-Fueled Low-NOx Combustor,” ASME J. Eng. Gas Turbines Power, 121, No. 2, pp. 281–284.
Seume, J. R., Vortmeyer, N., Krause, W., Hermann, J., Hantschk, C.-C., Zangl, P., Gleis, S., Vortmeyer, D., and Orthmann, A., 1997, “Application of Active Combustion Instability Control to a Heavy Duty Gas Turbine,” ASME Paper 97-AA-119, ASME Asia ’97 Congress and Exhibition, Singapore, Oct.
Hoffmann, S., Weber, G., Judith, H., Hermann, J., and Orthmann, A., 1998, “Application of Active Combustion Instability Control to Siemens Heavy Duty Gas Turbines,” Symposium of the AVT Panel on Gas Turbine Engine Combustion, Emission, and Alternative Fuels, Lisbon, Portugal, Oct.
Paschereit, C. O., Gutmark, E., and Weisenstein, W., 1999, “Control of Combustion Driven Oscillations by Equivalence Ratio Modulations,” ASME Paper 99-GT-118, International Gas Turbine and Aeroengine Congress & Exposition, Indianapolis, IN, June.
Richards, G. A., Yip, M. J., Robey, E., Cowell, L., and Rawlins, D., 1995, “Combustion Oscillation Control by Cyclic Fuel Injection,” ASME Paper 95-GT-224, International Gas Turbine and Aeroengine Congress & Exposition, Houston, TX , June.
Sattinger, S. S., Neumeier, Y., Nabi, A., Zinn, B. T., Amos, D. J., and Darling, D. D., 1998, “Sub-scale Demonstration of the Active Feedback Control of Gas-Turbine Combustion Instabilities,” ASME Paper 98-GT-258, International Gas Turbine and Aeroengine Congress & Exposition, Stockholm, Sweden, June.
Peracchio,  A. A., and Proscia,  W., 1999, “Nonlinear Heat-Release/Acoustic Model for Thermoacoustic Instability in Lean Premixed Combustors,” ASME J. Eng. Gas Turbines Power, 121, No. 3, pp. 415–421.
Lieuwen, T., Torres, H., Johnson, C., and Zinn, B., 1999, “A Mechanism of Combustion Instability in Lean Premixed Gas Turbine Combustors,” ASME Paper 99-GT-3, International Gas Turbine and Aeroengine Congress & Exposition, Indianapolis, IN, June.
Lee, D. S., and Anderson, T. J., 1999, “Measurements of Fuel/Air—Acoustic Coupling in Lean Premixed Combustion Systems,” AIAA Paper AIAA-99-0450, AIAA Aerospace Sciences Meeting, Reno, NV, Jan.
Stufflebeam, J. H., Kendrick, D. W., Sowa, W. A., and Snyder, T. S., 1999, “Quantifying Fuel/Air Unmixedness in Premixing Nozzles Using an Acetone Fluorescence Technique,” ASME Paper 99-GT-399, International Gas Turbine and Aeroengine Congress & Exposition, Indianapolis, IN, June.

Figures

Grahic Jump Location
Illustration of the intent of the actuation technique, utilizing the reduction of equivalence ratio fluctions by pulsed fuel injection
Grahic Jump Location
Cross section schematic of premixing fuel nozzle with actuated fuel injection spoke for introduction of control fuel flow (configurations 1-3)
Grahic Jump Location
Detailed view of three “spoke” injection configurations
Grahic Jump Location
Cross section schematic of premixing fuel nozzle with actuation of a portion of the main fuel injection array (configuration 4)
Grahic Jump Location
Steady-state fuel/air concentration profiles at premixer exit for three spoke injection concepts and configuration 4 (two-port main fuel injector). Concentration values have been normalized by the mean value for each case.
Grahic Jump Location
Phase-averaged fuel/air concentration profiles and unmixedness at premixer exit for 2-Hz modulation of fuel injection using configuration 4
Grahic Jump Location
Variation of spatially averaged fuel/air ratio at premixer exit over one period (5 msec) of 200 Hz fuel flow modulation. Bars indicate spatial variance about average value at each time.
Grahic Jump Location
Spectrum of uncontrolled combustion instability, showing high-amplitude pressure fluctuations at approximately 200 Hz.
Grahic Jump Location
Schematic of premixing fuel nozzle
Grahic Jump Location
Schematic of 4-MW single-nozzle combustor. Operating pressure=1.5 MPa. Inlet temperature=710 K.
Grahic Jump Location
Schematic of threshold control algorithm, showing method of time-delayed on/off actuation
Grahic Jump Location
The effect of steady-state fuel/air mixing on actuator authority in combustion tests for four different actuated fuel injection configurations
Grahic Jump Location
Comparison of uncontrolled and controlled combustor pressure spectra for control with main fuel array actuation (configuration 4)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In