小分子气体在液压油中扩散行为的分子动力学研究  

Study on the Gas Diffusion in Hydraulic Oil by Molecular Dynamics Simulation

作　　者：安骥[1] 金敏[1] 王位[1] 孔勇[1] 

机构地区：[1]上海海事大学商船学院,上海201306

出　　处：《液压气动与密封》2014年第12期29-31,共3页Hydraulics Pneumatics & Seals

基　　金：上海市教委重点学科资助项目(J50603);上海海事大学"学术新人"基金(YXR2014018)

摘　　要：为了从微观层次上揭示气体小分子在液压系统中的扩散机理,对小分子在液压油中的扩散溶解行为进行了分子动力学模拟。采用分子动力学模拟软件,模拟了不同温度下气体小分子在液压油中的扩散。结果表明,温度越高,扩散系数越大,且与文献报道的实验数据吻合较好,说明分子动力学模拟是研究小分子在液压油中扩散行为的有效方法。In order to reveal the diffusion mechanism of gas molecules in the hydraulic system on the micro-level,diffusion dissolution behaviors of small-molecule in hydraulic oil were simulated based on the molecular dynamics.By using the molecular dynamics simulation software,the diffusion of small gas molecules was simulated in the hydraulic oil at different temperatures.The results showed that the diffusion coefficient increases with the rising temperature,and the experimental data agrees well with the literature.It is concluded that the molecular dynamics simulation is an effective method to predict the gas diffusion coefficient of small molecules in hydraulic oil.

关 键 词：分子动力学 扩散系数 液压油 

分 类 号：TH137[机械工程—机械制造及自动化]