| 甲烷凝结系数的分子动力学研究 |
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| 引用本文： | 王遵敬,陈民,过增元.甲烷凝结系数的分子动力学研究[J].工程热物理学报,2002,23(3):342-344. |
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| 作者姓名： | 王遵敬 陈民 过增元 |
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| 作者单位： | 清华大学工程力学系,北京100084 |
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| 基金项目： | 国家自然科学基金资助项目（No．50106004），清华大学及清华大学机械工程学院基础研究基金资助项目 |
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| 摘 要： | 对甲烷的蒸发与凝结过程进行了分子动力学模拟，采用特征时间法统计获得了甲烷在不同温度条件下的凝结系数，并与氩的凝结系数进行了比较。结果表明，甲烷与氩的凝结系数都随温度增加而减小，但温度对甲烷凝结系数的影响小于对氩凝结系数的影响，其差异可以用蒸发与凝结的过渡态理论进行解释。
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| 关 键 词： | 凝结系数 汽液界面 分子动力学 |
| 文章编号： | 0253-231X(2002)03-0342-03 |
| 修稿时间： | 2001年12月28 |
MOLECULAR DYNAMICS STUDY OF THE CONDENSATION COEFFICIENT OF METHANE |
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| WANG Zun-Jing CHEN Min GUO Zeng-Yuan.MOLECULAR DYNAMICS STUDY OF THE CONDENSATION COEFFICIENT OF METHANE[J].Journal of Engineering Thermophysics,2002,23(3):342-344. |
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| Authors: | WANG Zun-Jing CHEN Min GUO Zeng-Yuan |
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| Abstract: | Molecular dynamics simulations are performed to study the evaporation and condensation processes of methane. With the statistical method of characteristic time, the condensation coefficients of methane at different temperatures are obtained and compared with those of argon. Though the condensation coefficients of methane and argon both decrease with the increase of the temperature, the temperature dependence of condensation coefficient of methane is weaker than that of argon. This difference between the condusation coefficient of methane and that of argon can be interpreted reasonably by the transition state theory of evaporation and condensation. |
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| Keywords: | condensation coefficient liquid-vapor interface molecular dynamics |
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