| 引用本文: | 樊孝峰,王江峰,赵法明,等.气态煤油超声速燃烧简化化学反应模型.[J].国防科技大学学报,2019,41(1):48-57.[点击复制] |
| FAN Xiaofeng,WANG Jiangfeng,ZHAO Faming,et al.Reduced kinetic model for supersonic combustion of vaporized kerosene[J].Journal of National University of Defense Technology,2019,41(1):48-57[点击复制] |
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| 气态煤油超声速燃烧简化化学反应模型 |
| 樊孝峰, 王江峰, 赵法明, 杨天鹏 |
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(南京航空航天大学 航空宇航学院， 江苏 南京 210016)
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| 摘要: |
| 为探究超燃冲压发动机燃烧室中煤油燃料燃烧的化学动力学过程，综合采用敏感性分析方法与路径分析方法，针对RP-3航空煤油三组分替代燃料的详细反应模型进行简化，建立一种适用于超声速燃烧流场数值模拟的新型26组分89反应简化燃烧反应模型。采用该简化燃烧模型对RP-3航空煤油替代燃料的点火、燃烧特性进行数值模拟，并与详细反应模型结果和试验数据进行对比校验。此外，将该简化燃烧模型与超声速燃烧流场计算方法相结合，数值分析了典型超燃冲压发动机燃烧室流场内化学动力学特性。研究结果表明：新型简化燃烧反应模型在不影响数值模拟精度的前提下，有效减少了反应组分与反应方程个数，提高了超声速复杂燃烧流场的数值模拟效率，并且能够准确获得烯烃、炔烃等重要中间燃烧产物以及小分子活性基团的空间分布规律，给出更全面的流场信息。 |
| 关键词: 超声速燃烧 RP-3航空煤油 化学反应模型 敏感性分析 反应路径分析 |
| DOI：10.11887/j.cn.201901008 |
| 投稿日期：2017-11-06 |
| 基金项目:南京航空航天大学重大项目培育基金资助项目（NP2018402） |
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| Reduced kinetic model for supersonic combustion of vaporized kerosene |
| FAN Xiaofeng, WANG Jiangfeng, ZHAO Faming, YANG Tianpeng |
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(College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
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| Abstract: |
| In order to explore the chemical kinetics process of kerosene combustion in scramjet combustor, a detailed chemical reaction model for the combustion of RP-3 surrogate fuel was simplified to obtain a new reduced model (26 species and 89 reactions) based on the sensitivity analysis and reaction path analysis, and the combustion characteristics of supersonic reacting flow field were depicted. The ignition and combustion characteristics of this surrogate fuel under various conditions were simulated by using the reduced reaction model，and the simulation results were compared with the experimental data and the calculated results by the detailed reaction model. Furthermore, numerical simulations were implemented by using a coupled nonequilibrium reaction solver with the proposed reduced model, and the combustion characteristic of a scramjet combustor with single-side cavity was analyzed in detail. The results indicate that the reduced model can represent the ignition and combustion characteristic of the detailed model to some extent. And the proposed reduced chemical kinetic model predicts the myriad details of the reacting flow field accurately, including the distributions of major species, such as alkenes and cycloalkanes. At the same time, the number of species involved in the reduced model is much fewer, and the reduced model can improve the combustion simulation efficiency. |
| Keywords: supersonic combustion RP-3 aviation kerosene chemical reaction model sensitivity analysis reaction path analysis |
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