FLUID-FLUID PHASE-SEPARATION IN A REPULSIVE ALPHA-EXP-6 MIXTURE - A COMPARISON WITH THE FULL ALPHA-EXP-6 MIXTURE BY MEANS OF COMPUTER-SIMULATIONS

被引：38

作者：

DEKUIJPER, A ^{[1
]}

SMIT, B ^{[1
]}

SCHOUTEN, JA ^{[1
]}

MICHELS, JPJ ^{[1
]}

机构：

[1] SHELL INT RES MAATSCHAPPIJ BV,KONINKLIJKE SHELL LAB AMSTERDAM,1031 CM AMSTERDAM,NETHERLANDS

来源：

EUROPHYSICS LETTERS | 1990年 / 13卷 / 08期

关键词：

STATISTICAL MECHANICS; PHASE EQUILIBRIA; PHASE TRANSITIONS; AND CRITICAL POINTS; LIQUID-LIQUID TRANSITIONS;

D O I：

10.1209/0295-5075/13/8/002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this letter we present the results of a study on fluid-fluid phase separation in binary mixtures. We have investigated two systems: a mixture interacting through the full alpha-exp-6 potential and a mixture interacting through the repulsive part of the alpha-exp-6 potential. Monte Carlo simulations were performed at 300 kelvin and the interaction parameter values used for the full potential correspond to the mixture helium-hydrogen. The results of the repulsive alpha-exp-6 potential demonstrate clearly that attraction is not necessary for fluid-fluid demixing; its only influence appears to be a shift of the critical pressure. The full alpha-exp-6 results are in good agreement with the experimental data.

引用

页码：679 / 683

页数：5

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