The second virial coefficient for anisotropic square-well fluids

被引：4
|
作者：
Gamez, Francisco
Caro, Carlos
机构：
[1] C/Clavel 101, Mairena Del Aljarafe, Seville
[2] C/Castilla 82-1 (1-7), Seville
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2015年 / 208卷
关键词：
Second virial coefficient; Anisotropic potential models; Boyle temperature; Critical temperature; VAPOR-LIQUID-EQUILIBRIUM; CRITICAL-POINT;
D O I：
10.1016/j.molliq.2015.04.011
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：
The exact second virial coefficient (B-2) for anisotropic fluids is evaluated in a compact and exact form. Explicitly, the By expressions for spherical D-dimensional square well fluids with an embedded point dipole are given in terms of simple special functions for the whole range of dipole moment strengths and potential ranges. An alternative equation for the B-2 value of three-dimensional Stockmayer model is also reported for comparison purposes. Additionally, some aspects of the second virial coefficient for non-spherical square-well model are discussed in relation with the formation of ordered fluids. In addition, Boyle temperatures are also evaluated with any desire accuracy. These calculations enlarge the set of molecular models owning an analytical expression for the second virial coefficient. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：21 / 26
页数：6
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