近喷嘴区域燃烧流场可视化研究

推进技术 ›› 2013, Vol. 34 ›› Issue (9): 1209-1213.

近喷嘴区域燃烧流场可视化研究

高玉闪^1,2, 金平¹,蔡国飙¹

北京航空航天大学宇航学院,北京 100191;北京航空航天大学宇航学院,北京 100191;北京航空航天大学宇航学院,北京 100191

发布日期:2021-08-15
作者简介:高玉闪(1983—),男,博士,工程师,研究领域为液体火箭发动机总体设计、燃烧、传热等。E-mail:gys_841010@yahoo.cn
基金资助:
国家“八六三”高技术资助项目。

Visualization of Combustion Flowfield in Injector Nearfield

College of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;College of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;College of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

Published:2021-08-15

摘要/Abstract

摘要： 为进一步深入研究气-气掺混燃烧机理,在带可视化窗口的透明燃烧室中,采用高速摄影仪和数码相机获得了同轴剪切喷嘴、同轴双剪切喷嘴和旋流喷嘴近喷嘴区域的气氢/气氧燃烧火焰结构。结果表明:剪切式喷嘴火焰始于氧喷嘴出口端面,燃烧主要发生在气 -气掺混剪切层当中,同轴双剪切喷嘴在出口形成两个剪切燃烧面；与剪切式喷嘴相比,旋流式喷嘴近喷嘴区域燃烧更加剧烈,当旋流数足够大时,将在中心形成稳定的燃烧回流区。 

关键词: 喷嘴;气-气燃烧;燃烧流场可视化;透明燃烧室;高速摄影 

Abstract: In order to study the gas-gas mixing and combustion mechanism deeply, gas-gas combustion flow field in a chamber with quartz windows was conducted utilizing gaseous oxygen and hydrogen as propellants. The flame structure near the exit of the coaxial injector, tri-coaxial injector and swirl injector were captured by high-speed photography and digital camera. The results show that the gas-gas combustion occurs mainly in the mixing shear layer and the combustion flame develops from the injector post tip. The tri-coaxial injector has two shear combustion surfaces. Compared with the shear injector, the swirl injector burns more intensely. When the swirl number is large enough, a stable combustion recirculation zone may be formed in the center. 

Key words: Injector; Gas-gas combustion; Combustion flowfield visualization; Chamber with quartz window; High speed photography

高玉闪,金平,蔡国飙. 近喷嘴区域燃烧流场可视化研究[J]. 推进技术, 2013, 34(9): 1209-1213.

GAO Yu-shan^1,2,JIN Ping¹,CAI Guo-biao¹. Visualization of Combustion Flowfield in Injector Nearfield[J]. Journal of Propulsion Technology, 2013, 34(9): 1209-1213.

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