航天推进技术研究院主办
[1]王壮,胡锦华,杨建文,等.气-气同轴直流式喷注器结构参数对燃烧性能的影响[J].火箭推进,2022,48(03):32-39.
WANG Zhuang,HU Jinhua,YANG Jianwen,et al.Effect of structural parameters of gas-gas coaxial direct-flow injector on combustion performance[J].Journal of Rocket Propulsion,2022,48(03):32-39.
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WANG Zhuang,HU Jinhua,YANG Jianwen,et al.Effect of structural parameters of gas-gas coaxial direct-flow injector on combustion performance[J].Journal of Rocket Propulsion,2022,48(03):32-39.
气-气同轴直流式喷注器结构参数对燃烧性能的影响
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
48
期数:
2022年03期
页码:
32-39
栏目:
研究与设计
出版日期:
2022-06-22
- Title:
- Effect of structural parameters of gas-gas coaxial direct-flow injector on combustion performance
- 文章编号:
- 1672-9374(2022)03-0032-08
- Keywords:
- gas-gas coaxial direct-flow injector structural parameters combustion efficiency flame length
- 分类号:
- V434
- 文献标志码:
- A
- 摘要:
- 气—气同轴直流式喷注器广泛应用于全流量补燃循环发动机,喷注器的结构设计在很大程度上影响发动机主推力室的性能。为了探究气—气同轴直流式喷注器的结构参数对燃烧性能的影响,通过数值计算,分析了氧喷嘴直径、燃料喷嘴宽度、燃料喷嘴与氧喷嘴之间的壁厚以及中心氧喷嘴的缩进距离这4方面的结构参数对燃烧效率以及火焰长度的影响。结果表明:氧喷嘴直径以及燃料喷嘴与氧喷嘴之间的壁厚对火焰长度影响较大,燃料喷嘴宽度以及缩进距离对火焰长度影响较小。随着氧喷嘴直径以及氧喷嘴与燃料喷嘴之间的壁厚增加,火焰长度增加,燃烧效率降低。另外,燃料喷嘴的宽度与缩进距离对推进剂组元的混合影响较大,一定的缩进距离可以加快组元的混合,并且提高火焰稳定性。
- Abstract:
- Gas-gas coaxial direct-flow injector is widely used in the full-flow staged combustion cycle rocket engine, and the structural parameters of the injector affect the performance of the main thrust chamber.In order to explore the influence of the structural parameters of the gas-gas coaxial direct-flow injector on the combustion performance, four structural parameters are analyzed through numerical calculation, which include the diameter of the oxygen nozzle, the width of the fuel nozzle, the wall thickness between the fuel nozzle and the oxygen nozzle, and the indent distance of the central nozzle.The results show that the diameter of oxygen nozzle and the wall thickness between fuel nozzle and oxygen nozzle have significant influence on the flame length, while the width of fuel nozzle and the indent distance have little effect on the flame length.As the diameter of oxygen nozzle and the wall thickness increase, the flame length increases and the combustion efficiency decreases.In addition, the width and indent distance of fuel nozzle have a great influence on the mixing of the propellant components.A certain indent distance can enhance the mixing of components and improve the flame stability.
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备注/Memo
收稿日期:2021-05-02 修回日期:2021-07-22
基金项目:国家自然科学基金(52005385)
作者简介:王壮(1995—),男,硕士,工程师,研究领域为液体火箭发动机仿真技术。
更新日期/Last Update:
1900-01-01