航天推进技术研究院主办
Gao Yushan,Du Zhenggang,Jin Pin,et al.Numerical simulation on the combustion characteristic of shear coaxial G02/GCH4 inj ector[J].Journal of Rocket Propulsion,2009,35(05):18-23.
气氧/甲烷同轴剪切喷注器燃烧特性数值模拟
- Title:
- Numerical simulation on the combustion characteristic of shear coaxial G02/GCH4 inj ector
- Keywords:
- GO2/GCH4 injector; design parameters; combustion efficiency; temperature; numedeal simulation
- 分类号:
- V434
- 文献标志码:
- A
- 摘要:
- 对以气氧/甲烷为推进剂的同轴剪切喷注器进行了数值模拟。研究了喷注器设 计参数对推进剂掺混燃烧、燃烧室壁面和喷注面板热载的影响。研究结果表明:氧喷注速度 增大不利于推进剂的掺混燃烧,降低了燃烧效率。增大了燃烧室壁面和喷注面板的热载;动 量比增大提高了推进剂的燃烧效率.缩短了燃烧距离。但增大了燃烧室壁面和喷注面板的热 载;中心氧喷嘴管壁厚和氧喷嘴管的缩进。对燃烧效率有影响,但两者对燃烧室壁面和喷注 面板热载影响不明显;对燃烧效率而言,特定情况下氧喷嘴缩进存在一最佳值。
- Abstract:
- Numerical simulation of shear coaxial G02/GCH4 injector is conducted to study the effects of the design parameters on the combustion characteristics and the heat flux of the wall and faceplate.The results show that increasing the oxygen injected velocity is harmful to mixing and combustion and makes the combustion efficiency decreased and the heat flux of the wall and faceplate increased.Higher momentum ratio enhanced the mixing and the combustion and made a short combustion length.The higher the combustion efficiency,the higher the heat flux of the wall and faceplate.The thickness and recess of the gas oxygen post had influence on the combustion efficiency, but less influence on the heat flux of the wall and faceplate.The recess of the gas oxygen post existed an optimum value on the combustion efficiency.
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备注/Memo
收稿日期:2009--06—18;修回151期:2009-09-29。 作者简介:高玉闪(1983一),男,博士生,研究领域为全流量补燃循环发动机技术。