Method for investigation of combustion flowfield characteristics in single element gas/gas injector chamber
-
摘要: 为了方便开展单喷嘴气气喷注器燃烧试验研究,设计了一种燃烧室壁面测温,并结合推力室燃烧流场的非稳态数值模拟的方法,以考察燃烧室内流场的发展和燃烧完成情况.应用试验数据对不同的湍流模型和燃烧模型进行了对比研究,得到与试验结果较为吻合的计算模型.并应用该方法开展了同轴剪切式喷注器氢/氧喷注动量比、燃烧室压力变化的试验研究.试验结果表明喷注器掺混燃烧效果随氢/氧喷注动量比增加而增强,而不随燃烧室压力的变化而变化.Abstract: To facilitate hot-fire tests of single element gas/gas injector chamber, a method used to reveal the combustion development and completion length of the chamber flowfield was designed, which combines wall temperature measurement and numerical simulation of gas/gas combustion flowfield. The impacts of using various turbulence and combustion models was investigated to obtain the models which best represented the experimental data. And influences of H2/O2 momentum ratio and chamber pressure on shear-coaxial injector combustion flowfield were investigated. The result shows that the better mixing and the shorter combustion length can be obtained with the larger H2/O2 momentum-ratio and the chamber pressure can hardly influences the combustion flowfield.
-
Key words:
- measurement method /
- combustion flowfield /
- gas/gas injector /
- combustor /
- numerical simulation
-
[1] Davis J A, Campbell R L. Advantages of a full-flow staged combustion cycle engine system . AIAA 1997-3318,1997 [2] Moser M D, Pal S, Santoro R J, et al. laser light scattering measurements in a GO2/GH2 uni-element rocket chamber . AIAA 1995-0137,1995 [3] Foust M J, Deshpande M, Pal S, et al. Experimental and analytical characterization of a shear coaxial combustion GO2/GH2 flowfield . AIAA 1996-0646,1996 [4] Foust M J, Pal S, Santoro R J. Gaseous propellant rocket studies using raman spectroscopy . AIAA 1996-2766,1996 [5] Archambault M R, Talley D. Computational analysis of a single-element, shear-coaxial, GH2/GO2 engine . AIAA 2002-1088,2002 [6] Smith T D, Klem M D, Breisacher K J. Experimental evaluation of a subscale gaseous hydrogengaseous oxygen coaxial rocket injector . NASA/TM-2002-211982, 2002 [7] 庄逢辰.液体火箭发动机喷雾燃烧的理论、模型及应用[M].长沙:国防科技大学出版社, 1995 Zhuang Fengchen. Liquid rocket engine spray combustion: theory, modeling, and application[M]. Changsha: Press of National University of National Defense, 1995 (in Chinese) [8] 王福军.计算流体动力学分析[M].北京:清华大学出版社, 2004 Wang Fujun. Analysis of CFD [M]. Beijing: Tsinghua University Press, 2004 (in Chinese) [9] 赵坚行.燃烧的数值模拟[M].北京:科学出版社, 2002 Zhao Jianxing. The numerical simulation of combustion [M]. Beijing: Science Press, 2002(in Chinese) -
点击查看大图
计量
- 文章访问数: 3051
- HTML全文浏览量: 45
- PDF下载量: 857
- 被引次数: 0
下载:
