富氢/富氧燃气同轴气-气喷嘴燃烧性能仿真与分析  

Simulation and analysis on combustion performance of hydrogen-rich/oxygen-rich gas-gas coaxial injectors

作　　者：李茂[1] 杜正刚[1] 金平[1] 蔡国飙[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《航空动力学报》2010年第4期835-840,共6页Journal of Aerospace Power

基　　金：国家863基金

摘　　要：为研究全流量补燃循环发动机富氢/富氧燃气气-气喷嘴性能,以758 K的富氢燃气为燃料、676 K的富氧燃气为氧化剂,对采用同轴直流喷嘴、氧喷嘴扩张同轴喷嘴、氢喷嘴收缩同轴喷嘴、氧喷嘴中心具有实心圆柱同轴喷嘴、双同轴直流喷嘴的燃烧室的燃烧流场进行了数值模拟,并考察了流量对燃烧性能的影响.仿真结果表明双同轴直流喷嘴具有最好的燃烧性能.数值模拟结果对富氢/富氧燃气气-气喷注器设计有参考价值.In order to investigate the performance of the hydrogen-rich/oxygen-rich gas-gas injector in the full flow staged combustion（FFSC） engine,the combustion flow fields of the combustors with a shear coaxial injector,a coaxial injector for the oxidizer injector with expansion angle,a coaxial injector for the fuel injector with contraction angle,a coaxial injector for the oxidizer injector with a column in the center and a shear dual-coaxial injector were simulated.The propellant of the injectors was hydrogen-rich gas in temperature of 758 K and oxygen-rich gas in temperature of 676 K.The results of the numerical simulation show that,the shear dual-coaxial injector has the best combustion performance.The results can provide the reliable criterion for the design and experiment of hydrogen-rich/oxygen-rich gas-gas injector.

关 键 词：全流量补燃循环 燃烧性能 富氢/富氧燃气 气-气喷嘴 仿真 

分 类 号：V434.13[航空宇航科学与技术—航空宇航推进理论与工程]