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Methane-Air Equivalence Ratio Effect on Premixed Turbulent Low Swirl Stabilized Flame

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Ouali S., Bentebbiche A., Belmrabet T.
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vol. 126
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issue 3
717-724
EN
This work presents a numerical simulation of premixed methane-air low swirl stabilized flame, the geometry describes a low swirl burner kind. Reynolds average Navier-Stokes standard κ-ε model for turbulence coupling to partially premixed model for combustion were used with varying methane equivalence ratio from 0.6 to 1.4. Parameters governing flame structure are investigated; velocity, temperature, CH_4 distribution and thermal nitric oxide apparitions fields, results are compared and validated with experimental and large eddy simulation works cited in references, they offer good similarities for all flame parameters studied. Actual study works to find equilibrium between the maximum of generated temperature and the minimum of thermal NO pollutant emissions for low swirl burners without neglecting the flame stabilization which must be maintained.
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