华南理工大学学报(自然科学版) ›› 2011, Vol. 39 ›› Issue (8): 66-71.doi: 10.3969/j.issn.1000-565X.2011.08.012

• 化学化工、能源 • 上一篇    下一篇

醇基燃料燃烧器的性能和场协同分

鄂加强1 张双利1 傅学正2 李玉强1 董江东1 张彬1   

  1. 1.湖南大学 机械与运载工程学院,湖南 长沙 410082; 2.湖南工业大学 理学院,湖南 株洲 412008
  • 收稿日期:2010-11-16 修回日期:2011-01-08 出版日期:2011-08-25 发布日期:2011-07-06
  • 通信作者: 鄂加强(1972-) ,男,博士,副教授,主要从事热工检测、优化研究. E-mail:ejiaqiang@126.com
  • 作者简介:鄂加强(1972-) ,男,博士,副教授,主要从事热工检测、优化研究.
  • 基金资助:

    科技部科技型中小企业技术创新基金项目( 07C26214301758)

Performance and Field Synergy Analysis of Alcohol-Based Fuel Burner

E Jia-qiangZhang Shuang-liFu Xue-zhengLi Yu-qiangDong Jiang-dongZhang Bin1   

  1. 1. College of Mechanical and Vehicle Engineering,Hunan University,Changsha 410082,Hunan,China; 2. School of Science,Hunan University of Technology,Zhuzhou 412008,Hunan,China
  • Received:2010-11-16 Revised:2011-01-08 Online:2011-08-25 Published:2011-07-06
  • Contact: 鄂加强(1972-) ,男,博士,副教授,主要从事热工检测、优化研究. E-mail:ejiaqiang@126.com
  • About author:鄂加强(1972-) ,男,博士,副教授,主要从事热工检测、优化研究.
  • Supported by:

    科技部科技型中小企业技术创新基金项目( 07C26214301758)

摘要: 针对甲醇燃料扩散燃烧时醇基燃料燃烧器的机理,建立了阿累尼乌斯有限反应速率模型和漩涡破碎燃烧模型,在考虑对流和辐射传热损失的条件下进行了数值仿真和场协同分析.结果表明,当过量空气系数为1. 1 ~ 1. 2 时,出口处的NOx和CO 的质量分数较低,同时平均温度和最高温度较高,燃烧器性能较好; 且在工作压力为0. 18 ~ 0. 19 MPa时,速度场和温度场的协同性最佳,醇基燃料燃烧器燃烧效果最好.

关键词: 醇基燃料, 燃烧, 场协同理论, 污染物, 数值模拟

Abstract:

Aiming at the mechanism of alcohol-based fuel burner with the diffusion combustion of methanol fuel,the Arrhenius limited reaction rate model and the eddy break-up combustion model are established,and numerical simulation and field synergy analysis are conducted by taking into consideration the heat loss due to convection and radiation. The results show that,when the excess air coefficient is 1. 1~1. 2,the mass fractions of NOx and CO at
the burner outlet are both low,while both the average temperature and the maximum temperature are high,thus bringing about excellent performance on the part of the burner; furthermore,when the pressure is 0. 18~0. 19 MPa,the synergy between the velocity field and the temperature field proves to be the best,thus the best effect of the alcohol-based fuel burner being achieved.

Key words: alcohol-based fuel, combustion, field synergy principle, pollutant, numerical simulation

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