液氮冲击压缩特性的理论计算  

THEORETICAL CALCULATION FOR SHOCK COMPRESSIONAL PROPERTIES OF LIQUID NITROGEN

作　　者：孟川民[1] 施尚春[2] 董石[2] 孙悦[1] 焦荣珍[1] 杨向东[1] 

机构地区：[1]四川大学高温高压物理研究所,四川成都610065 [2]中国工程物理研究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

出　　处：《高压物理学报》2002年第3期213-216,共4页Chinese Journal of High Pressure Physics

摘　　要：用修正的WCA理论计算了液氮冲击压缩至 70GPa的一次冲击Hugoniot数据。计算中引入与体系比容有关的分子离解因子 ,计算结果表明 ,在 33GPa以上液氮体系发生的相变为分子离解相变 ,该过程对体系热力学状态有较大影响 ,分子离解是对冲击能量的吸收过程 ,导致体系冲击压力和温度增长率下降。For the liquid nitrogen, the modified WCA fluid perturbation theory is used to calculate the shock pressure and shock temperature with the exp 6 reference potential. The theory is generalized from multi component system by adding the molecular dissociation fraction, which is related to volume . The theoretical results of p H and T H are in good agreement with those of experimental data up to 70 GPa. According to the theoretical and experimental data, the shock energy is partially absorbed by molecular dissociation.

关 键 词：理论计算 液氮 冲击压缩 离解相变 

分 类 号：O52[理学—高压高温物理] O613.61[理学—物理]