含铝复合推进剂燃烧与流动数值模拟  

Numerical simulation of combustion and flow of the aluminized composite propellant

作　　者：刘平安 常浩 王文超 郜冶[1] 刘加宁[1] 

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,哈尔滨150001

出　　处：《固体火箭技术》2017年第6期698-705,共8页Journal of Solid Rocket Technology

基　　金：中央高校基本科研业务费专项资金资助(HEUCFD1502)

摘　　要：为了研究含铝复合推进剂在发动机中的燃烧与流动、铝金属在发动机内的多相燃烧问题,对某含铝复合推进剂发动机内流场进行数值模拟。基于FLUENT软件,根据气相燃烧与非均相燃烧理论,应用EDC燃烧模型以及颗粒表面反应模型,建立了含铝复合推进剂燃料的二维两相湍流燃烧模型,验证了颗粒表面反应模型计算铝燃烧的可行性,模拟了不同颗粒相Al2O3含量下发动机内流场的分布,得出了压力、温度等发动机参数的变化趋势。结果表明,颗粒表面反应模型可较好地模拟发动机内铝燃烧的宏观现象,发动机燃气中颗粒相含量对发动机内流场有显著的影响。随着颗粒相含量的增加发动机燃烧室压力降低,温度升高;发动机两相流损失增加,发动机推力降低。For the research of combustion and flow of aluminized composite propellants and muhiphase combustion of aluminum metal in a motor,the numerical simulation of aluminized composite propellants is carried out.Based on the EDC combustion model and particle surface reaction model of fluent software, the two-dimensional and two-phase turbulent combustion model of aluminized composite propellants has been established according to the gas phase and heterogeneous combustion theory of aluminum. It proves that the particle surface reaction model is reasonable to simulate the combustion of aluminum and it shows the change trend of tem- perature and pressure by simulating different mass fraction of A1203 particles.The result also proves that the particle surface reaction model can simulate the combustion of aluminum better in a motor,where the mass fraction of A1203 particles has a significant impact on the flow field.With the increase of particle phase content, the pressure decreases and the temperature increases in the combustion chamber as well as the engine two-phase flow loss increases and the engine thrust is therefore reduced.

关 键 词：含铝复合推进剂 数值模拟 铝燃烧 EDC燃烧模型 颗粒表面反应模型 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]