修正的van der Waals模型及其对液相流体的应用  

MODIFIED VAN DER WAALS MODELS AND THEIR APPLICATION TO LIQUIDS

作　　者：窦晓冬[1] 卢伟京[1] 李忠辉 陈求林 傅国旗[2] 

机构地区：[1]华东理工大学化学与制药学院,上海200237 [2]天津大学化工学院,天津300072

出　　处：《化工科技》2002年第1期22-24,共3页Science & Technology in Chemical Industry

基　　金："国家自然科学基金资助项目"的部分探索研究内容

摘　　要：用 7种有代表性物质在广阔温度和压力范围内的液体物性实验值 ,对两个不同程度上修正的vanderWaals模型进行比较和评价。结果表明 ,从统计力学出发 ,进一步引入Lennard Jones位能函数对内压项进行修正的vanderWaals模型 。Comparison and evaluation were made on two modified van der Waals models with the experimental values of thermodynamic properties of seven typical liquids over wide temperature and pressure ranges. It was shown that based on the statistical mechanics, the model with the introduction of the Lennard Jones potential function to modify the internal pressure term of the van der Waals equation prevails evidently over that without such modification.

关 键 词：修正 van-der-Waals模型 液相流体 应用 液体 内压 位能函数 硫体状态方程 

分 类 号：O435[机械工程—光学工程]