Non-premixed ignition, laminar flame propagation, and mechanism reduction of n-butanol, iso-butanol, and methyl butanoate
Non-premixed ignition, laminar flame propagation, and mechanism reduction of n-butanol, iso-butanol, and methyl butanoate
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DOI：
10.1016/j.proci.2010.05.084
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Wei Liu;A. P. Kelley;C. Law
中科院分区：
文献类型：
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作者：
Wei Liu;A. P. Kelley;C. Law
在1和3个大气压的滞止流中，通过加热氧化剂在液体池组件中测量了正丁醇（CH 3CH 2CH 2CH 2 OH）、异丁醇（（CH 3）2CHCH 2 OH）和丁酸甲酯（CH 3CH 2CH 2COOCH 3）的非预混点火温度。此外，拉伸校正的层流火焰速度的空气-正丁醇/异丁醇/丁酸甲酯的混合物从向外传播的球形火焰在初始压力高达2个大气压，为广泛的范围内的当量比确定。采用三种新近发展起来的动力学机理对正丁醇和丁酸甲酯的着火温度和层流火焰速度进行了数值模拟。通过化学爆炸模式分析（CEMA）和敏感性分析，确定并讨论了点火和火焰传播的主要反应途径。通过一系列系统化的策略，进一步简化了详细模型。简化后的机理在均质和扩散燃烧环境下都具有很好的一致性，大大提高了计算效率。
The non-premixed ignition temperature of n-butanol (CH3CH2CH2CH2OH), iso-butanol ((CH3)2CHCH2OH) and methyl butanoate (CH3CH2CH2COOCH3) was measured in a liquid pool assembly by heated oxidizer in a stagnation flow for system pressures of 1 and 3 atm. In addition, the stretch-corrected laminar flame speeds of mixtures of air–n-butanol/iso-butanol/methyl butanoate were determined from the outwardly propagating spherical flame at initial pressures of up to 2 atm, for an extensive range of equivalence ratio. The ignition temperature and laminar flame speeds of n-butanol and methyl butanoate were computationally simulated with three recently developed kinetic mechanisms in the literature. Dominant reaction pathways to ignition and flame propagation were identified and discussed through a chemical explosive mode analysis (CEMA) and sensitivity analysis. The detailed models were further reduced through a series of systematic strategies. The reduced mechanisms provided excellent agreement in both homogeneous and diffusive combustion environments and greatly improved the computation efficiency.