甲烷气体的冲击状态方程数值计算  

One-dimensional numerical computation for equation of state of gaseous methane under shock compression

作　　者：唐敬友[1] 岳朋涛[2] 谷岩[1] 胡海波[1] 徐胜利[2] 董庆东[1] 

机构地区：[1]中物院流体物理研究所冲击波物理与爆轰物理实验室,四川绵阳621900 [2]中国科学技术大学力学与机械工程系,安徽合肥230020

出　　处：《空气动力学学报》2003年第2期164-172,共9页Acta Aerodynamica Sinica

基　　金：中国工程物理研究院科学技术研究基金项目资助(421020102-05)

摘　　要：为了研究甲烷气体的冲击状态方程,用一维无粘流体反应动力学方程组,分别以7组元17步反应和13组元40步反应模型计算了常温下压力为0.12MPa时受高速飞片撞击的甲烷气体的Hugoniot数据,给出了飞片速度为3km/s～9km/s范围内9种条件下的数值结果。在相同的初始条件下,当飞片速度较低(如3km/s)时两种反应模型给出相同的结果。通过较高飞片速度下的计算结果与实验结果比较,13组元40步反应模型给出的数值结果与实验结果基本一致。To study equation of state of shocked methane, on the basis of onedimensional inviscid hydrodynamic equations coupling with chemically reacting equations, equation of state of methane under shock compression were calculated using a model of 17step reactions with 7 species and a model of 40step reactions with 13 species, respectively. Numerical results of nine shock conditions at the flyer velocities ranging from 3km/s to 9km/s were obtained for each reaction model. At same initial conditions and low flyer velocity (e.g. 3km/s), nearly identical numerical results were gained for the two reaction models. By comparison of computational and experimental results, the numerical results for the model of 40step reactions with 13 species were in close agreement with experimental results at higher flyer velocities.

关 键 词：甲烷气体 冲击压缩 液体反应动力学 液体动力学实验 

分 类 号：O354.5[理学—流体力学]