| 气-气喷嘴结构分析 |
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| 引用本文： | 杜正刚,高玉闪,蔡国飙.气-气喷嘴结构分析[J].火箭推进,2009,35(3):6-10. |
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| 作者姓名： | 杜正刚 高玉闪 蔡国飙 |
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| 作者单位： | 北京航空航天大学,宇航学院,北京,100083 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 对以气氢/气氧为推进剂的同轴剪切、离心和同轴双剪切结构的喷嘴进行设计,分析了这三种结构型式的喷嘴结构尺寸;通过对同轴剪切式和同轴双剪切喷嘴燃烧室流场进行数值模拟,研究喷嘴流量和结构对推进剂燃烧过程的影响。研究结果认为：同轴剪切式喷嘴结构简单;离心式喷嘴的流量系数小且带有旋流室,导致喷嘴的结构尺寸大;同轴双剪切喷嘴使推进剂在燃烧室内形成两个燃烧面,能在大流量下使推进剂达到高的燃烧效率。
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| 关 键 词： | 喷嘴 同轴双剪切 流量 效率 |
Structure pattern analysis of gas-gas injector |
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| Du Zhenggang,Gao Yushan,Cai Guobiao.Structure pattern analysis of gas-gas injector[J].Journal of Rocket Propulsion,2009,35(3):6-10. |
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| Authors: | Du Zhenggang Gao Yushan Cai Guobiao |
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| Institution: | College of Astronautics;Beijing University of Aeronautics and Astronautics;Beijing 100083;China |
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| Abstract: | The shear coaxial, swirl coaxial and double shear coaxial injector using the gaseous oxygen and hydrogen as propellants were designed to analyse its geometrical dimension. The reacting flow field in chambers of shear coaxial and double shear coaxial injector were simulated in combination with the two equation k-ε turbulence model to investigate the effect of mass flow rate and injector pattern on the combusting process. The results displayed that the structure of shear coaxial injector was simple; the small discharge coefficient as well as the swirl chamber made the outline size of swirl injector much bigger; the double shear coaxial injector created double flame fronts in the chamber and achieving high combustion efficiency at the condition of large mass flow rate. |
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| Keywords: | injector double shear coaxial flow rate efficiency |
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