Studies in Molecular Dynamics. III. A Mixture of Hard Spheres

Author:

Alder B. J.1

Affiliation:

1. Weizmann Institute of Science, Rehovoth, Israel

Abstract

For an equimolar mixture of hard spheres differing in radius by a factor of 3 it is shown that the numerical method gives the thermodynamic properties within 1% accuracy in the fluid region but generates metastable states at solid densities. The Percus—Yevick theory for mixtures is shown to be as accurate as for pure systems, which makes it plausible that no two-fluid phase region exists for mixtures of spheres. The volume of the mixture is found to be always smaller than the volume of the two pure fluid components, however, at high pressures when a solid and fluid must be mixed to give a fluid mixture, the excess volume is positive. The excess properties are small so that the assumption of ideal mixing (no excess volume) leads to an accurate prediction of the properties of hard sphere mixtures. Furthermore, the conclusion can be drawn that the excess properties in mixing ordinary liquids are primarily determined by differences in the attractive potentials rather than solely by the molecular sizes of the pure components.

Publisher

AIP Publishing

Cited by 183 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.7亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2025 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3