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TECHNICAL PAPERS: Gas Turbines: Combustion and Fuel

Experimental Investigation of the Interaction of Unsteady Flow With Combustion

[+] Author and Article Information
K.-U. Schildmacher, R. Koch

Institute of Thermal Turbomachinery, University of Karlsruhe, Kaiserstrasse 12, 76128 Karlsruhe, Germany

J. Eng. Gas Turbines Power 127(2), 295-300 (Apr 15, 2005) (6 pages) doi:10.1115/1.1789512 History: Received October 01, 2002; Revised March 01, 2003; Online April 15, 2005
Copyright © 2005 by ASME
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References

Lefebvre, A. H., 1974, “Pollution Control in Continuous Combustion Engines,” Fifteenth Symposium on Combustion, Combustion Inst., Pittsburgh, pp. 1169–1180.
Kraemer, H., Dinkelacker, F., Huth, M., Leipertz, A., Poeschl, G., and Lenze, M., 1999, “Optimization of the Mixing Quality of a Real Size Gas Turbine Burner With Instantaneous Planar Laser-Induced Fluorescence Imaging,” ASME Paper No. 99-GT-135.
Coats,  C. M., 1996, “Coherent Structures in Combustion,” Prog. Energy Combust. Sci., 22, pp. 427–509.
Gupta, A. K., Lilley, D. G., and Syred, N., 1984, “Swirl Flows,” ABACUS Press.
Gutmark,  E. J., Shadow,  K. C., and Yu,  K. H., 1994, “Methods for Enhanced Turbulence Mixing in Supersonic Shear Flows,” Appl. Mech. Rev., 47(2), pp. 375–417.
Prade, B., Streb, H., Berenbrink, P., Schetter, B., and Pyka, G., 1996, “Development of an Improved Hybrid Burner—Initial Operating Experience in a Gas Turbine,” ASME Paper No. 96-GT-43.
Schildmacher, K.-U., Koch, R., Krebs, W., Hoffmann, S., and Wittig, S., 2002, “Experimental Investigation of Unsteady Flow Phenomena in High Intense Combustion Systems,” Proceedings of the 6th European Conference on Industrial Furnaces and Boilers.
Loseke, A. H., and Gould, R. D., 1991, “A Comparison of Velocity Bias Correction Techniques in Laser-Doppler-Velocimetry,” ASME Fluid Measurement and Instrumentation Forum, 108 , pp. 63–68.
McLaughlin, D. K., and Tiedermann, W. G., 1973, “Biasing Correction for Individual Realization of Laser-Doppler-Anemometer Measurements in Turbulent Flow,” The Physics of Flow, 16 , pp. 2082–2088.
Schildmacher, K.-U., Koch, R., Krebs, W., Hoffmann, S., and Wittig, S., 2000, “Experimental Investigations of the Temporal Air-Fuel Mixing Fluctuations and Cold Flow Instabilities of a Premixing Gas Turbine Burner,” ASME Paper No. 2000-GT-0084.
Schlueter, J., Schoenfeld, T., Poinsot, T., Krebs, W., and Hoffmann, S., 2001, “Characterization of Confined Swirl Flows Using Large Eddy Simulations,” ASME Paper No. 2001-GT-0060.
Host-Madsen, A., 1994, “A New Method for Estimation of Turbulence Spectra for Laser Doppler Anemometry,” 7th International Symposium on Applications of Laser Techniques of Fluid Mechanics, Lisbon.
Host-Madsen,  A., and Caspersen,  C., 1981, “Spectral Analysis—A Modern Perspective,” Proc. IEEE, 69(11), pp. 1380–1419.
Laufer,  J., and Monkewitz,  P., 1978, “The Influence of the Dominant Large Scale Structures on the Initial Instability of a Low-Speed Circular Jet,” Bull. Am. Phys. Soc., 23, p. 1008.

Figures

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Experimental setup for the LDA investigations
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Frequency of instability
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Instantaneous fuel concentration for premixed operation (nonreacting flow)
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Pressure amplitude and oscillation frequency for different equivalence ratios
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Normalized axial velocity field and normalized local phase-locked velocity fluctuations at high oscillation sound level (ϕ=0.83)
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Pressure amplitude at the air plenum
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Phase-locked velocity ratio v/u at high pressure fluctuations
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Normalized axial velocity field and normalized local phase-locked velocity fluctuations at low oscillation sound level (ϕ=0.71)
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Phase-locked velocity ratio v/u at low pressure fluctuations
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Normalized axial velocity field and power spectra without oscillations (ϕ=0.66)
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Frequency of instability and Strouhal number
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Power spectra of velocities without oscillations at ϕ=0.5

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