van der Waals equation of state for a fluid in a nanopore

被引：108
|
作者：
Zarragoicoechea, GJ [1 ]
Kuz, VA [1 ]
机构：
[1] Natl Univ La Plata, CONICET, CICPBA, IFLYSIB, RA-1900 La Plata, Argentina
来源：
PHYSICAL REVIEW E | 2002年 / 65卷 / 02期
关键词：
D O I：
10.1103/PhysRevE.65.021110
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
A generalization of the van der Waals equation of state is presented for a confined fluid in a nanopore. The pressure in the fluid, confined in a narrow pore of infinite length, has tensorial character, From this hypothesis, the Helmholtz free energy is constructed and expressions for the axial and transversal components of the pressure tenser are obtained. The equations predict liquid-vapor equilibria, and a shift of the critical point with respect to that obtained from the van der Waals bulk equation. The results are in good agreement with recent experiments.
引用
收藏
页码：1 / 021110
页数：4
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