| 不同初始条件下乙醇-空气预混合气层流燃烧火焰结构分析 |
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| 引用本文： | 张志远,郑建军,黄佐华,马向平,韩树.不同初始条件下乙醇-空气预混合气层流燃烧火焰结构分析[J].装甲兵工程学院学报,2011,25(1):36-40. |
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| 作者姓名： | 张志远 郑建军 黄佐华 马向平 韩树 |
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| 作者单位： | 1. 装甲兵工程学院机械工程系,北京,100072
2. 西安交通大学动力工程多相流国家重点实验室,陕西,西安,710049 |
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| 基金项目： | 国家自然科学基金资助项目(50821604,50636064) |
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| 摘 要： | 给出了一个扩展的乙醇化学反应动力学机理并给予了验证。利用此扩展机理分别计算了不同初始条件下乙醇-空气混合气一维层流自由传播火焰中反应物、自由基、碳基中间产物和燃烧产物的分布规律,预测了NOx的浓度分布曲线。对于乙醇-空气火焰,得到的主要结论有：主要自由基OH、H和O浓度随初始压力增加而减小;随初始温度增加而增加;随氮气稀释度的增加而减小。自由基浓度随初始条件的变化规律部分地解释了实验和计算得到的层流燃烧速度随初始条件的变化规律。
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| 关 键 词： | 乙醇 化学反应动力学机理 预混层流火焰 火焰结构 |
Analysis on Ethanol-air Mixture Premixed Laminar Flame Structure at Different Initial Conditions |
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| ZHANG Zhi-yuan,ZHENG Jian-jun,HUANG Zuo-hua,MA Xiang-ping,HAN Shu.Analysis on Ethanol-air Mixture Premixed Laminar Flame Structure at Different Initial Conditions[J].Journal of Armored Force Engineering Institute,2011,25(1):36-40. |
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| Authors: | ZHANG Zhi-yuan ZHENG Jian-jun HUANG Zuo-hua MA Xiang-ping HAN Shu |
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| Institution: | ZHANG Zhi-yuan1,ZHENG Jian-jun2,HUANG Zuo-hua2,MA Xiang-ping1,HAN Shu1(1.Department of Mechanical Engineering,Academy of Armored Force Engineering,Beijing 100072,China,2.State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Transportation University,Xi'an 710049,China) |
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| Abstract: | An extended ethanol oxidation mechanism is presented and validated in this paper.The distribution law of the reactants,free radicals,carbon-based intermediate products and combustion in the 1D laminar flame structure of ethanol-air mixtures under different initial conditions is calculated by using the extended mechanism and molar concentration distribution curve of NOx is predicted.For the ethanol-air flame,the main conclusions are as follows: the concentration of the free radical OH,H and O increases with ... |
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| Keywords: | ethanol chemical reaction kinetic mechanism premixed laminar flame flame structure |
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