论文部分内容阅读
本文对混合比为 0 9、 1 0、 1 1三种状态下工作的双组元自燃推进剂 (肼 /四氧化二氮 )姿控发动机喷管内化学反应流动进行了数值模拟。数值模拟时采用了弱耦合点隐式方法的数值方法及肼 /四氧化二氮的十二组分、十三个基元反应的有限速率化学反应模型。得到了三种混合比下反应流及混合比为 1 0时冻结流发动机的推力和比推力、喷管中的流动参数及各组分的质量分数。分析表明 ,数值模拟的结果与理论分析一致 ,结果可靠。本文工作为姿控发动机的喷管设计提供了理论依据
In this paper, the numerical simulation of the chemical reaction flow in the nozzle of a two-component self-propellant propellant (hydrazine / nitrous oxide) attitude control engine operating under the conditions of 0 9,1 0,1 1 mixing ratio is carried out. In the numerical simulation, the numerical method of weakly coupled point implicit method and the chemical reaction model of thiazine hydrazine / nitrogen tetroxide with twelve components and thirteen elementary reactions are used. The thrust and specific thrust, the flow parameters in the nozzle and the mass fraction of each component were obtained under three kinds of mixing ratio and the mixing ratio was 10. The analysis shows that the numerical simulation results are consistent with the theoretical analysis and the results are reliable. This work provides a theoretical basis for the nozzle design of attitude control engine