A Study on Influence of Dilution Gas on Burning Velocity of Ultra-Lean Hydrogen added Propane Premixed Meso-scale Spherical Laminar Flames

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  • 超希薄水素－プロパン混合気の微小球状層流火炎の燃焼特性に与える希釈ガスの影響に関する研究

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<p>This study is performed to examine experimentally the influence of dilution gas addition on the burning velocity of ultra-lean hydrogen added propane air premixed meso-scale spherical laminar flames, whose equivalence ratio φ is 0.5 and hydrogen additional rate δH is 0.8. N2 and CO2, dilution gas, are adopted as simulated EGR gas. The flame radius rf and the burning velocity SLl of meso-scale flames in the range of rf approximately from 1 to 5 mm are obtained by using sequential schlieren images recorded under appropriate ignition conditions. It was found that SLl normalized by the laminar burning velocity at the same rf tends to increase with a simulated EGR gas additional rate.</p>

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