高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (12): 2026.

• 论文 • 上一篇    下一篇

Ar-Kr溶液扩散系数的分子动力学模拟及其与温度的关系

严六明, 严琪良, 刘洪来, 戎宗明, 胡英   

  1. 华东理工大学化学系, 上海 200237
  • 收稿日期:1996-09-10 出版日期:1997-12-24 发布日期:1997-12-24
  • 通讯作者: 严六明, 男, 32岁, 博士, 副教授.
  • 作者简介:严六明, 男, 32岁, 博士, 副教授.
  • 基金资助:

    国家自然科学基金;上海市青年教师学术基金

Molecular Dynamics Simulation of Diffusion Coefficients of Ar-Kr System and Its Temperature Dependence

YAN Liu-Ming, YAN Qi-Liang, LIU Hong-lai, RONG Zong-Ming, HU Ying   

  1. Department of Chemistry, East China University of Science and Technology, Shanghai 200237
  • Received:1996-09-10 Online:1997-12-24 Published:1997-12-24

摘要: 用分子动力学模拟方法研究确定Ar-Kr溶液的自扩散系数D1、D2和互扩散系数D12以及它们随温度变化的规律.结果表明,分别用Green-Kubo法和Einstein法得到的扩散系数在数值上一致;该溶液的3种扩散系数均满足D=D0e-E/RT关系.

关键词: Ar-Kr溶液, 分子动力学模拟, 扩散系数, 速度相关函数, 平均平方位移

Abstract: Molecular dynamics simulation has been used to determine the self-diffusion co-efficients D1, D2 and mutual diffusion coefficient D12 of Ar-Kr system at different tempera-tures both from the Green-Kubo integrals over the velocity correlation function and from theEinstein relations for the mean square displacement.Good agreements were obtained be-tween the diffusion coefficients from the two methods. The temperature dependence of allthe diffusion coefficients is D=D0e-E/RT

Key words: Ar-Kr solution system, Molecular dynamics simulation, Diffusion coefficients, Velocity correlation function, Mean square displacement

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