碳水混合物冲击压缩特性的理论研究

刘福生; 洪德贵; 周雪芬

doi:10.11858/gywlxb.2001.03.004

碳水混合物冲击压缩特性的理论研究

doi: 10.11858/gywlxb.2001.03.004

1.
西南交通大学高温高压物理研究所，四川成都 610031；
2.
四川省乐山市企业管理局矿山管理办公室，四川乐山 614000

详细信息

通讯作者:
刘福生

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出版历程
- 收稿日期: 2000-07-24
- 修回日期: 2001-04-23
- 发布日期: 2001-09-05

Theoretical Research on the Hugoniot Curves of the Mixtures of Carbon and Water

1.
Laboratory of High Pressure Physics, Southwest Jiaotong University, Chengdu 610031, China;
2.
Office of Mining Industry, Management Department of Enterprise, Leshan 614000, China

More Information

Corresponding author: LIU Fu-Sheng

摘要

摘要: 采用固-液双相混合模型和分子流体的微扰变分统计理论，分别计算了石墨-水体系（0=1.233 g/cm3）和金刚石-水体系（0=1.238 g/cm3）的冲击压缩特性。结果表明：（1）在不发生石墨金刚石相变和化学反应的低压区域（p20 GPa），这两种混合体系的冲击压缩曲线的差别并不明显；（2）在发生石墨金刚石相变的高压区域（p20 GPa），这两种混合体系的冲击压缩曲线显著不同，且石墨-水体系更易压缩；（3）在45～60 GPa强冲击压力范围内，冲击波诱发的化学反应也不会显著影响这两种体系冲击压缩曲线的走势。上述结论与文献（高压物理学报，1999，13(2):87-92）发表的实验结果相矛盾。进一步分析了引起理论与实验结果不一致的可能原因，并对文献中的实验结果及其理论分析结论提出质疑。
- 碳水混合物 /
- 流体微扰变分统计理论 /
- 冲击压缩曲线 /
- 混合法则
Abstract: In this article, the Hugoniot curves of graphite-water and diamond-water mixtures, with the initial densities of 1.233 g/cm3 and 1.238 g/cm3 respectively, are calculated by use of the two-phase mixing-model and the fluid perturbation variational statistical theory. The results are: (1) The difference between the Hugoniot curves of these two mixtures is small below 20 GPa where the graphitediamond phase transition and chemical reactions are supposed not to occur. (2) When the shock pressure is beyond 20 GPa where the phase transition is considered to happen without any chemical reactions, these two curves are apparently different from each other, and the graphite-water mixture easier to be compressed. (3) The chemical reactions in these two mixtures at the pressure range of 45~60 GPa will not change the trend of these two Hugoniot curves obviously. These conclusions are contrary to the experimental results published recently (in Chin. J. High. Press. Phys. 13(2), p87). The reliability of the experimental data and the theoretical explanations in that paper are questioned.
- mixture of carbon and water /
- fluid-perturbation statistical theory /
- Hugoniot curve /
- mixing rule

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