利用分形理论研究气液界面特性  

A STUDY ON THE CHARACTERISTICS OF LIQUID-VAPOR INTERFACE BY USING FRACTAL THEORY

作　　者：王德明[1] 曾丹苓[1] 刘娟芳[1] 

机构地区：[1]重庆大学动力工程学院,重庆400044

出　　处：《工程热物理学报》2004年第5期749-751,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50076048);教育部博士点专项基金项目资助(2003)

摘　　要：利用分形理论对Lennard-Jones12-6流体气液界面性质进行了研究。得到了密度分布及温度分布,将表面张力 与气液界面的分形维数进行关联。分形维数是界面层所固有的,它与界面的其它特性有着本质的联系,因此,可以通过测 量界面层的分形维数,再利用此分形维数确定界面的其它特性。这种全新的测量界面特性的方法有望由此产生。By using fractal theory, the molecular dynamics simulation is conducted for Lennard-Jones 12-6 fluid. The distributions of density and temperature are obtained. The surface tension γ* of the interface is calculated, and correlated with the fractal dimension df of it. The relation of γ* and df reveals a fact that the fractal dimension is actually an important digital character of the liquid-vapor interface. It has an intrinsic connection with other properties of the interface, such as surface tension. Therefore, it is expected that the characteristics of surface can be obtained by measuring the fractal dimension of the surface, thus, a new method of measuring the character of interface, such as surface tension, will be developed.

关 键 词：分子动力学 分形理论 分形维数 表面张力 气液界面 

分 类 号：TK123[动力工程及工程热物理—工程热物理]