Measurements of Laminar Burning Velocities and Markstein Lengths of 2,5-Dimethylfuran−Air−Diluent Premixed Flames
Measurements of Laminar Burning Velocities and Markstein Lengths of 2,5-Dimethylfuran−Air−Diluent Premixed Flames
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DOI：
10.1021/ef900454v
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发表时间：
2009-07
期刊：
影响因子：
5.3
通讯作者：
Xuesong Wu;Zuo-hua Huang;Chun Jin;Xiangang Wang;B. Zheng;Yingjia Zhang;Lixia Wei
中科院分区：
文献类型：
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作者：
Xuesong Wu;Zuo-hua Huang;Chun Jin;Xiangang Wang;B. Zheng;Yingjia Zhang;Lixia Wei
利用向外传播的球形火焰和高速纹影摄影系统，获得了 2,5-二甲基呋喃 (DMF)−空气−N2/CO2 预混混合物在大气压和初始温度 393 K 下三种不同稀释比下的层流燃烧速度和马克斯坦长度。添加稀释剂用于模拟废气再循环对火焰传播的影响。结果表明，随着稀释比的增加，无拉伸火焰传播速度和层流燃烧速度均减小。马克斯坦长度随着稀释比例的增加而增加，表明稀释剂的添加会提高火焰的稳定性。 CO2作为稀释剂对火焰传播和火焰稳定性的稀释作用强于N2作为稀释剂。对于特定当量比，层流燃烧速度随着稀释比的增加呈现线性下降趋势。层流燃烧速度与 的比率...
Laminar burning velocities and Markstein lengths of 2,5-dimethylfuran (DMF)−air−N2/CO2 premixed mixtures at the atmospheric pressure and initial temperature of 393 K over three different dilution ratios were obtained by using the outwardly propagating spherical flame and high-speed schlieren photograph system. Addition of diluent was used to simulate the effects of exhaust gas recirculation on the flame propagation. The results show that both unstretched flame propagation speed and laminar burning velocity decrease with the increase of dilution ratio. Markstein length is increased with the increase of dilution ratio, indicating that addition of diluent will improve the stability of the flame. The dilution effects of CO2 as diluent on the flame propagation and the flame stability are stronger than those of N2 as diluent. For a specific equivalence ratio, the laminar burning velocity shows a linear decreasing trend with the increase of dilution ratio. The ratio of the laminar burning velocities with and wit...