甲醇中低温着火延迟时间的计算模型
Computational Model of Low-to-Intermediate Temperature Ignition Delay Time for Methanol-Air Mixture
查看参考文献20篇
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文摘
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研究了甲醇在中低温条件下的氧化特性,通过对详细反应机理的分析,得到一个九步的骨干机理,在1,500,K下其着火延迟时间预测值与详细机理的预测值基本一致.通过理论分析着火感应期内占主导作用的自由基行为,最后得到了一条能用于估算甲醇中低温着火延迟时间的显式公式.该公式显示甲醇在中低温下的着火延迟时间主要取决于CH_3OH+HO_2→CH_2OH+H_2O_2的反应速率.该反应对甲醇在中低温下氧化特性有重要的影响. |
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其他语种文摘
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The oxidation characteristics of methanol-air mixture at low-to-intermediate temperatures were investigated numerically in this work.Based on the analysis of the detailed kinetic mechanism of methanol,a nine-step skeletal model was developed and validated by comparing the computational ignition delay time under 1,500,K with that from detailed mechanism.With further analysis of auto-ignition behavior in a homogeneous adiabatic system,an explicit formula for ignition delay time was derived,which had a simple form and showed good agreement with numerical results.It was indicated that the ignition delay time of methanol-air mixture at low-to-intermediate temperatures was mainly controlled by the reaction rate of CH_3OH+HO_2 →CH_2OH+H_2O_2,which has a dominant effect on the oxidation behavior of methanol within this temperature range. |
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来源
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燃烧科学与技术
,2016,22(6):522-526 【核心库】
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DOI
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10.11715/rskxjs.r201601016
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关键词
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甲醇
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着火延迟
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中低温
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反应动力学
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地址
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中国科学院广州能源研究所, 中国科学院可再生能源重点实验室, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1006-8740 |
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学科
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能源与动力工程 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:5895498
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