Quantitative mixture fraction measurements in combustion system via laser induced breakdown spectroscopy
KAUST DepartmentClean Combustion Research Center
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AbstractLaser induced breakdown spectroscopy (LIBS) technique has been applied to quantitative mixture fraction measurements in flames. The measured spectra of different mixtures of natural gas and air are used to obtain the calibration parameters for local elemental mass fraction measurements and hence calculate the mixture fraction. The results are compared with the mixture fraction calculations based on the ratios of the spectral lines of H/N elements, H/O elements and C/(N+O) and they show good agreement within the reaction zone of the flames. Some deviations are observed outside the reaction zone. The ability of LIBS technique as a tool for quantitative mixture fraction as well as elemental fraction measurements in reacting and non-reacting of turbulent flames is feasible. © 2014 Elsevier Ltd. All rights reserved.
SponsorsThis work is partially supported by the Swedish International Development Agency (SIDA) fund for the MENA Countries through the joint project between Egypt and Sweden.
JournalOptics & Laser Technology