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TECHNICAL PAPERS: Gas Turbines: Combustion and Fuels

Liquid Fuel Placement and Mixing of Generic Aeroengine Premix Module at Different Operating Conditions

[+] Author and Article Information
J. Becker, C. Hassa

DLR–German Aerospace Center, Institute of Propulsion Technology, 51170 Cologne, Germany

J. Eng. Gas Turbines Power 125(4), 901-908 (Nov 18, 2003) (8 pages) doi:10.1115/1.1587741 History: Received December 01, 2001; Revised March 01, 2002; Online November 18, 2003
Copyright © 2003 by ASME
Topics: Fuels , Nozzles , Sprays , Air flow
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References

Bittlinger, G., and Brehm, N., 1999, “High Pressure Combustion Test of LPP Modules in an Axially Staged Combustor Using a Multisector Rig,” 14th International Symp. on Airbreathing Engines (ISABE), Florence, Italy, paper IS-007.
Lefebvre, A. H., 1998, Gas Turbine Combustion, 2nd Ed., Taylor & Francis, Philadelphia, PA, Chap. 9.
Inamura, T., Nagai, N., Hirai, T., and Asano, H., 1991, “Disintegration Phenomena of Metalized Slurry Fuel Jets in High Speed Air Stream,” Proceedings, 5th Int’l Conference on Liquid Atomization and Spray Systems (ICLASS-91), National Institute of Standards and Technology, Gaithersburg, MD, pp. 839–846.
Chen T. H., Smith, C. R., Schommer, D. G., and Nejad, A. S., 1993, “Multi-zone Behavior of Transverse Liquid Jet in High-Speed Flow,” AIAA Paper No. 93-0453.
Wu,  P. K., Kirkendall,  K. A., Fuller,  R. P., and Nejad,  A. S., 1997, “Breakup Processes of Liquid Jets in Subsonic Crossflows,” J. Propul. Power, 13, pp. 64–73.
Becker,  J., and Hassa,  C., 2002, “Breakup and Atomization of a Kerosene Jet in Crossflow at Elevated Pressure,” Atomization Sprays, 12, pp. 49–67.
Brandt,  M., Schmitz,  G., and Rachner,  M., 1998, “An Experimental and Numerical Study of Kerosine Spray Evaporation in a Premix Duct for Gas Turbine Combustors at High Pressure,” Combust. Sci. Technol., 138, pp. 313–348.
Adrian,  R. J., and Yao,  C. S., 1987, “Power Spectra of Fluid Velocities Measured by Laser Doppler Velocimetry,” Exp. Fluids, 5, pp. 17–29.
Becker, J., and Hassa, C., 2001, “Messung des turbulenten Längenmaßes in einem generischen Vormischmodul für Flugtriebwerke,” Proceedings, 9, GALA Fachtagung, Winterthur, Switzerland, paper 25 (in German).
Hassa, C., Blümcke, E., and Eickhoff, H., 1990, “Measurements of Eulerian Macro Timescales in Highly Swirling Flows and Comparison With Computational Model,” Proceedings, 5th Int’l Symp. on Application of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, paper 10.1.
Guin, C., 1998, “Characterization of Autoignition and Flashback in PremixedInjection Systems,” RTO Meeting Proceedings 14, Gas Turbine Engine Combustion, Emissions and Alternative Fuels, NATO Research and Technology Organization (RTO), Neuilly-sur-Seine, France, pp. 30/11–30/19.
Dring,  R. P., and Suo,  M., 1978, “Particle Trajectories in Swirling Flows,” J. Energy, 2, pp. 232–237.
Chung,  J. N., and Troutt,  T. R., 1987, “Simulation of Particle Dispersion in an Axisymmetric Jet,” J. Fluid Mech., 186, pp. 199–222.
Jasuja, A. K., 1982, “Plain-Jet Airblast Atomization of Alternative Liquid Petroleum Fuels Under High Ambient Pressure Conditions,” ASME Paper No. 82-GT-32.
Hautman, D. J., and Rosfjord, T. J., 1990, “Transverse Liquid Injection Studies,” AIAA Paper No. 90-1965.
Rachner,  M., Becker,  J., Hassa,  C., and Doerr,  T., 2002, “Modelling of the Atomization of a Plain Liquid Jet in Crossflow at Gas Turbine Conditions,” Aerospace Science and Technology, 6, pp. 495–506.

Figures

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Schematic of premix module (not to scale). White arrow indicates active fuel nozzle.
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Laser light sheet images at 6 bar
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Laser light sheet images at 12 bar
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Measured fuel flux (cm3/cm2⋅s) at tres=0.47 ms,q=3, left: 6 bar; right: 12 bar
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Measured SMD (μm) at tres=0.47 ms,q=3, left: 6 bar; right: 12 bar
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Radial profiles of mean velocity components at tres=0.27 ms, normalized with nominal total velocity
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Radial profiles of velocity fluctuation at tres=0.27 ms
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Radial profiles of turbulence length scale at tres=0.27 ms
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Fuel flux (cm3/cm2⋅s) at tres=0.47 ms,q=3, extrapolated to four fuel nozzles, left: 6 bar; right: 12 bar
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Fuel flux (cm3/cm2⋅s) at tres=0.47 ms,q=3, extrapolated to six fuel nozzles, left: 6 bar; right: 12 bar
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Fuel flux (cm3/cm2⋅s) at tres=0.47 ms,q=3, extrapolated to eight fuel nozzles, left: 6 bar; right: 12 bar

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