| 气氢/液氧同轴喷注单元细节对燃烧特性的影响 |
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| 引用本文： | 丁兆波,陶瑞峰,许晓勇.气氢/液氧同轴喷注单元细节对燃烧特性的影响[J].火箭推进,2013(5):31-34. |
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| 作者姓名： | 丁兆波 陶瑞峰 许晓勇 |
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| 作者单位： | 北京航天动力研究所,北京100076 |
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| 基金项目： | 国家863项目（2007AA705302） |
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| 摘 要： | 为了研究气氢/液氧同轴直流式喷嘴的结构参数细节对燃烧特性的影响,对单喷嘴燃烧室的燃烧流场进行了数值模拟.重点研究了氧喷嘴缩进深度、氧喷嘴出口壁厚和氢氧喷注速度比3个参数对燃烧效率和稳定性的影响规律.研究表明：上述喷嘴结构参数细节是影响气氢/液氧同轴直流式喷嘴燃烧特性的重要因素,其中适当提高氧喷嘴缩进深度或氢氧喷注速度比对燃烧效率有显著改善,而适当提高氧喷嘴出口壁厚对燃烧稳定性有显著改善.
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| 关 键 词： | 气氢 液氧 同轴直流式喷嘴 燃烧特性 燃烧流场 数值模拟 |
Effect of structure parameters of GH2/LOX shear coaxial injector on combustion characteristics |
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| DING Zhao-bo,TAO Rui-feng,XU Xiao-yong.Effect of structure parameters of GH2/LOX shear coaxial injector on combustion characteristics[J].Journal of Rocket Propulsion,2013(5):31-34. |
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| Authors: | DING Zhao-bo TAO Rui-feng XU Xiao-yong |
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| Institution: | (Beijing Aerospace Propulsion Institute, Beijing 100076, China) |
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| Abstract: | To study the influence of GH2/LOX shear coaxial injector structure parameters on com- bustion efficiency and stability, numerical simulation of combustion flow field of the single-injector combustor was carried out. The influence of indentation depth of LOX injector, thickness at outlet of LOX injector and gas-to-liquid velocity ratio on the combustor characteristics and stability was main- ly studied. The results indicate that the above parameters are the important factors to affect the com- bustor characteristics of GH2/LOX shear coaxial injector. The combustion efficiency increases with the proper increase of injective velocity ratio and indentation depth of LOX injector. The combustion stability increases with proper increase of thickness at outlet of LOX injector. |
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| Keywords: | simulationshear coaxial injector combustion characteristic combustion flow field |
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