| 火焰曲率对H_2扩散火焰NO排放影响的数值研究 |
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| 引用本文： | 李琼,王培勇,邢菲,邹建锋.火焰曲率对H_2扩散火焰NO排放影响的数值研究[J].工程热物理学报,2011(11). |
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| 作者姓名： | 李琼 王培勇 邢菲 邹建锋 |
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| 作者单位： | 华侨大学机电及自动化学院;厦门大学航空系;Department of Mechanical Engineering;Vanderbilt University;浙江大学航空航天学院; |
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| 基金项目： | 国家自然科学基金资助项目(No.10702064); 中央高校基本科研业务费专项资金资助项目(No.2010121045) |
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| 摘 要： | 使用不同的H_2/O_2化学反应机理和NO_x化学反应机理模拟了平面对冲火焰。通过和实验数据比较确定了最优的化学反应机理。使用该化学反应机理模拟了管形对冲火焰。通过对比平面拉伸火焰和管形拉伸火焰,突出了火焰曲率对H_2扩散火焰温度和NO排放的影响。分析显示正曲率提高火焰温度,负曲率降低火焰温度,由于NO生成对温度的敏感性,正曲率火焰的NO排放明显高于平面火焰,反之,负曲率火焰的NO排放大大低于平面火焰。
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| 关 键 词： | 平面对冲火焰 管形对冲火焰 火焰曲率 NO排放 差别扩散 |
Flame Curvature Effect on NO Emission of the Hydrogen Diffusion Flame |
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| LI Qiong WANG Pei-Yong XING Fei ZOU Jian-Feng.Flame Curvature Effect on NO Emission of the Hydrogen Diffusion Flame[J].Journal of Engineering Thermophysics,2011(11). |
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| Authors: | LI Qiong WANG Pei-Yong XING Fei ZOU Jian-Feng |
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| Institution: | LI Qiong~1 WANG Pei-Yong~(2,3) XING Fei~4 ZOU Jian-Feng~4 (1.College of Mechanical Engineering and Automation,Huaqiao University,Xiamen 361021,China,2.Department of Aerospace Engineering,Xiamen University,Xiamen 361005,3.Department of Mechanical Engineering,Vanderbilt University,Nashville 37203,USA,4.School of Aeronautics and Astronautics,Zhejiang University,Hangzhou 310027,China) |
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| Abstract: | The opposed jet H_2 diffusion flames are simulated with OPPDIF code and different H_2/O_2 and NO_x mechanisms.The simulations with 2004 UCSD NO_x mechanism and 2005 UCSD H_2/O_2 mechanism are identified to have the best agreement with the experimental flame temperature and NO emission.With those mechanisms,the tubular H_2 diffusion flames are simulated with modified OPPDIF code and compared with the plane opposed jet flames.The comparison result shows that the positive flame curvature enhances the preferent... |
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| Keywords: | opposed jet flame tubular flame flame curvature NO emission preferential diffusion |
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