Measurements of laminar burning velocities and flame stability analysis for dissociated methanol–air–diluent mixtures at elevated temperatures and pressures
作者： Xuan Zhang , Zuohua Huang , Zhiyuan Zhang , Jianjun Zheng , Wu Yu
DOI: 10.1016/J.IJHYDENE.2009.03.046
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摘要: Abstract The laminar burning velocities and Markstein lengths for the dissociated methanol–air–diluent mixtures were measured at different equivalence ratios, initial temperatures pressures, diluents (N2 CO2) dilution ratios by using spherically outward expanding flame. influences of these parameters on velocity length analyzed. results show that methanol–air mixture increases with an increase in temperature decreases pressure. peak occurs ratio 1.8. Cellular flame structures are presented early propagation stage decrease or ratio. transition positions can be observed curve speed to stretch rate, indicating occurrence cellular structure fronts. Mixture will sensitivity front rate. except very lean (equivalence less than 0.8). CO2 has a greater impact stability compared N2. It is also demonstrated normalized unstretched only related not influenced
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