Experimental results from optical and laser spectroscopic measurements on a scaled industrial gas turbine burner at elevated pressure are presented. Planar laser induced fluorescence on the OH radical and chemiluminescence imaging were applied to natural gas/air flames for a qualitative analysis of the position and shape of the flame brush, the flame front and the stabilization mechanism. The results exhibit two different ways of flame stabilization, a conical more stable flame and a pulsating opened flame. For quantitative results, one-dimensional laser Raman scattering was applied to these flames and evaluated on an average and single-shot basis in order to simultaneously determine the major species concentrations, the mixture fraction, and the temperature. The mixing of fuel and air, as well as the reaction progress, could thus be spatially and temporally resolved, showing differently strong variations depending on the flame stabilization mode and the location in the flame.
Experimental Analysis of the Combustion Behavior of a Gas Turbine Burner by Laser Measurement Techniques
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Ax, H., Stopper, U., Meier, W., Aigner, M., and Güthe, F. (March 5, 2010). "Experimental Analysis of the Combustion Behavior of a Gas Turbine Burner by Laser Measurement Techniques." ASME. J. Eng. Gas Turbines Power. May 2010; 132(5): 051503. https://doi.org/10.1115/1.3205033
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