基于敏感性分析的氧/甲烷燃烧反应简化机理
Reduced mechanism for oxygen/methane combustion based on sensitivity analysis
-
摘要: 为研究液氧/甲烷火箭发动机中甲烷在纯氧中的燃烧性能,通过敏感性分析方法,得到对平衡温度及组分浓度有重要影响的反应过程,从而构造出一套氧/甲烷燃烧的10步12组分简化反应机理.利用CHEMKIN 4.1中完全搅拌反应器对简化机理进行研究与检验.计算结果表明:简化反应机理在平衡温度和主要组分浓度的预测上与详细反应机理表现出良好的一致性,在较大范围内很好地反映了氧/甲烷的燃烧,为进一步高效准确研究甲烷在燃烧室中的流场奠定基础.Abstract: To investigate the oxygen/methane combustion in liquid rocket engine,a new set of reduced mechanism was developed for oxygen/methane based on sensitivity analysis.The reduced mechanism was then used in perfectly stirred reactor (PSR) of CHEMKIN 4. 1. The results show that the proposed kinetic mechanism shows good concordances with the detailed mechanism in the prediction of equilibrium temperature and major components concentration.The proposed reduced mechanism well reflects the oxygen/methane combustion in a wide range,laying the foundation for further efficient and accurate study of methane in the combustion chamber flow field.
-
[1] 禹天福,李亚裕.液氧/甲烷发动机的应用前景[J].航天制造技术,2007(2):1-4. YU Tianfu,LI Yayu.The application prospect of LOX/CH4 engine[J].Aerospace Manufacturing Technology,2007(2):1-4.(in Chinese) [2] 孙宏明.液氧/甲烷发动机评述[J].火箭推进,2006,32(2):23-31. SUN Hongming.Review of liquid oxygen/methane rocket engine [J].Journal of Rocket Propulsion,2006,32(2):23-31.(in Chinese) [3] Miller J A,Kee R J.Chemical kinetics and combustion modeling[J].Annu. Rev. in Phys. Chem.,1990,41(1):345-387. [4] Wdrnatz J,Maas U,Dibble R W.Combustion[M].Germany:Springer-Verlag,1999. [5] Turanyi T,Berees T,Vajda S.Reaction rate analysis of complex kinetic system[J].International Journal of Chemical Kinetics,1989,21(2):83-99. [6] Turanyi T.Applications of sensitivity analysis to combustion chemistry[J].Reliability Engineering and System Safety,1997,57(1):41-48. [7] Turanyi T.Sensitivity analysis of complex kinetic systems:tools and applications[J].J. Math. Chem.,1990,5(3):203-248. [8] 董刚.简化CH4/O2/N2基元反应模型在爆轰模拟中的应用[J].计算力学学报,2005,22(4):431-436. DONG Gang.An application of reduced CH4/O2/N2 reaction mechanism on numerical simulation of detonation[J].Chinese Journal of Computational Mechanics,2005,22(4):431-436(in Chinese) [9] Hoffmann A,Wetzel F,Zarzalis N.Extension of kinetic scheme to highly diluted combustion .GRDl-2001-40198,2001. [10] Tong T W.Mathematical modeling of catalytic-surface combustion of reacting flows .AIAA-2006-3185,2006. [11] Katta V R.Simulation of dynamic methane jet diffusion flames using finite rate chemistry models [J].AIAA Journal,1998,36(11):2044-2054. [12] Smith G P,Golden D M.Gri-mech version 3.0 . .http://www.me.berkeley.edu/gri_mech/version3.0/taxt30.html. -
点击查看大图
计量
- 文章访问数: 2357
- HTML浏览量: 5
- PDF量: 584
- 被引次数: 0
下载: