An Experimental Study on Burning Velocity of Lean-Hydrogen-Propane Premixed Meso-Scale Spherical Laminar Flames

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  • 希薄水素-プロパン混合気の微小球状層流火炎の燃焼速度特性に関する実験的研究

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<p>This study is performed to examine experimentally the effect of H2 addition on the burning velocity of lean-propane premixed meso-scale spherical laminar flames in the range of flame radius rf approximately from 1 to 5mm. The mixtures having the same laminar burning velocity (SL0=25cm/s) with different equivalence ratios (ϕ=0.5 and 0.8) and hydrogen additional rates (δH=0.0~1.0) are prepared. The rf and the burning velocity SLl of meso-scale flames are obtained by using sequential schlieren images recorded under appropriate ignition conditions. It was found that SLl at the same rf tends to increase with δH, where the Lewis number of the mixtures decrease as H2 is added to mixtures.</p>

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