Entropy of a two-component fluid in a square-well model

被引：1
|
作者：
Yuryev, A. A. [1 ,2 ]
Dubinin, N. E. [1 ,2 ]
Filippov, V. V. [1 ,2 ]
Vatolin, N. A. [1 ]
机构：
[1] Russian Acad Sci, Ural Branch, Inst Met, Ekaterinburg 620016, Russia
[2] Ural Fed Univ, Ekaterinburg 620002, Russia
来源：
DOKLADY PHYSICS | 2014年 / 59卷 / 10期
关键词：
SPHERICAL APPROXIMATION APPLICATION; THERMODYNAMIC PERTURBATION-THEORY; REFERENCE SYSTEM; LIQUID ALLOYS; METAL-ALLOYS;
D O I：
10.1134/S1028335814100103
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
An analytical expression valid for two approximations, notably, the random phase approximation (RPA) and the mean spherical approximation (MSA), is derived for entropy of a two-component system with the pair potential of a square well (SW). This expression is applied to calculate the excess entropy of mixing of the Na-K and Na-Cs equiatomic compositions. It is shown that the use of the SW model leads to better results than the application of the hard-sphere model. The MSA gives better convergence with the experiment compared with the RPA.
引用
收藏
页码：453 / 456
页数：4
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