| 李一涵,邱榕,蒋勇.乙醇及自由基引导对甲烷预混火焰结构影响的数值模拟[J].火灾科学,2005,14(4):199-206. |
| 乙醇及自由基引导对甲烷预混火焰结构影响的数值模拟 |
| Numerical Predictions of Premixed Flame Structures for Methane with Ethanol and Radicals Pilot |
| 投稿时间：2005-07-01 修订日期：2005-09-10 |
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| DOI：10.3969/j.issn.1004-5309.年.期.顺序 |
| 基金项目: |
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| 中文关键词: 详细反应动力学机理 预混火焰 甲烷 乙醇 |
| 英文关键词:Detailed Chemical Kinetic Mechanism Premixed Flame Methane Ethanol |
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| 中文摘要: |
| 本文使用了详细化学反应动力学机理计算模拟了混合有乙醇及典型自由基引导的甲烷预混火焰结构。该反应机理由Marinov研究组研究发表,包含有56个组分以及372个反应。本文的计算使用了CHEMKIN-3以及预混火焰代码,热力学及输运部分的计算基于Sandia国家实验室和Marinov研究室发布的数据库。火焰结构中主要产物的变化,关键中间产物和次要组分的计算结果显示加入乙醇和自由基都可以减少着火延迟。本文计算了三种不同条件下的火焰结构,分别为预混CH4/O2/N2火焰;预混甲烷/乙醇火焰;和加入引导自由基在甲烷/乙醇混合燃料中。此外还有含有自由基的甲烷火焰和加入乙醇的甲烷火焰比较。 |
| 英文摘要: |
| The premixed flame structures of methane with ethanol and some typical free radicals pilot are simulated in this work by using a detailed chemical kinetic model developed by Marinov,which contains 56 species in 372 reactions.Computations are performed using the Sandia CHEMKIN-3 and the premixed flame code.The thermodynamic and transport properties are taken from the databases of Sandia National Laboratory and Marinovs research group.The variations of main products,key intermediates and minor species in flames are predicted and computational results show that it reduces ignition delays of methane greater with ethanol fuel and radicals. Premixed flame structures under three conditions are computed in this paper in order to find out the influence of ethanol used in methane fuel : flame A expresses premixed CH4/O2/N2 flame,the second presents premixed methane-ethanol flame,the last one,flame with seeding radicals into methane-ethanol blended fuel.Besides,the methane flame with seeding radicals and methane flame induced by ethanol are compared. |
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