蒋勇,邱榕,董刚,张和平,范维澄.CH_4/N_2/O_2预混气激波火焰结构数值预测[J].火灾科学,2003,12(4):203-208. |
CH_4/N_2/O_2预混气激波火焰结构数值预测 |
Numerical Prediction of Shock-flame Structure for CH4/N2/O2 Mixtures |
投稿时间:2003-09-10 修订日期:2003-09-24 |
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DOI:10.3969/j.issn.1004-5309.年.期.顺序 |
基金项目:国家重点基础研究发展规划(批准号:2001CB409600);国家自然科学基金(批准号:50276057);安徽省教育厅重点科研 (批准号:2002KJ332ZD);中科院社会公益研究专项 (批准号:2001DIA40035)资助项目 |
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中文关键词: 激波管 激波火焰 化学动力学机理 |
英文关键词:shock tube shock-flame chemical kinetics |
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中文摘要: |
研究激波着火现象,推导激波加热点燃可燃气控制方程组。针对甲烷预混气激波火焰结构进行数值模拟,计算了激波燃烧时的压力、温度、及不同组分随时间的变化历程。其中甲烷燃烧采用美国BERKELEY大学GRI-MECH机理,该反应机理包含177个基元反应,涉及32种组分。程序采用美国SANDIA国家实验室发展的大型化学反应动力学软件包CHEMKINIII中相关的模型、子程序和热力学数据库。计算结果表明激波火焰有其自身的结构特征。 |
英文摘要: |
Study on shock flame and the set of equations, which describe the shock heated ignition process are derived. The variation histories of pressure and temperature as well as concentrations of species in shock flame for CH4/N2/O2 Mixtures are simulated by using both GRI MECH mechanism for methane consisted of 32 species in 177 reactions studied by Berkley University and some models, the released thermodynamic databases of CHEMKIN III package developed by Sandia National Laboratory. Computational results indicate that shock flame has its characteristics alone. |
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