冲击压缩下甲烷的状态参数实验研究  

Experimental studies on Hugoniot data of gaseous methane under shock compression

作　　者：唐敬友[1] 谷岩[1] 胡海波[1] 彭其先[1] 王贵朝[1] 董庆东[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《流体力学实验与测量》2001年第4期30-35,共6页Experiments and Measurements in Fluid Mechanics

基　　金：中国工程物理研究院国防科技预研基金资助项目 (编号 :2 0 0 0 0 5 8 0 4 )

摘　　要：为了研究冲击压缩下用作电探针保护介质的甲烷气体状态参数 ,用二级轻气炮加载方法加速平面钨合金飞片到 4.77km/s、4.89km/s和 5 .0 5km/s,撞击封装有甲烷气体的铝靶。采用六通道瞬态光学高温计系统记录下甲烷气体的高温辐亮度历史 ,拟合出甲烷的表观辐亮度温度。给出了对应飞片速度下初始压力为 0 .1 2MPa的甲烷气体的冲击压缩参数。实验分析表明 ,强冲击波压缩下的甲烷波后温升较小 ,冲击波后的气体存在非平衡热辐射过程和非平衡化学反应区。分析认为 。To study state parameters of methane as atmosphere gas of pins under shock compression, Aluminum target chambers filled with methane gases to a pressure of 0.12MPa were impacted by tungsten alloy projectiles which were accelerated to 4.77km/s, 4.89 km/s , 5.05 km/s using a two stage light gas gun. The radiance signals from shocked methane gases were recorded by an instantaneous six channel pyrometer system. The velocities of shock waves were measured and the seeming radiance temperatures were obtained to be 3850± 89K , 4080± 105K and 4269± 96K , respectively. The velocities of particles at the boundaries of targets/gases were calculated. The experimental results indicated that the temperatures of strongly shocked methane gases were relatively low and there existed non equilibrium thermal radiation and chemical reactions in shock downstream. The lower shock temperature of gaseous methane showed that gaseous methane may be a kind of advantageous atmosphere gas to protect pins.

关 键 词：冲击压缩条件 电探针保护介质 甲烷气体 状态参数 表现辐亮度温度 冲击波 

分 类 号：O623.11[理学—有机化学] O354.4[理学—化学]