Extended version of the van der Waals capillarity theory

被引:25
作者
Baidakov, VG [1 ]
Boltachev, GS [1 ]
机构
[1] Russian Acad Sci, Inst Thermal Phys, Ural Branch, Ekaterinburg, Russia
关键词
D O I
10.1063/1.1789920
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
An extended version of the van der Waals capillarity theory describing the liguid-vapor interface in the temperature range from the triple to the critical point is suggested. A model functional of thermodynamic potential for a two-phase Lennard-Jones system taking into account the effect of the highest degree terms of gradient expansion has been constructed. The identity of the thermodynamic and the mechanical definition of Tolman's length has been proved in the framework of the adopted form of functional. The properties of nuclei of the liquid and the vapor phase are described. The paper determines: the work of formation of a nucleus, density profiles, size dependences of the surface tension, and the parameter delta in the Gibbs-Tolman-Koenig-Buff equation. (C) 2004 American Institute of Physics.
引用
收藏
页码:8594 / 8601
页数:8
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