Dynamical crossover in supercritical core-softened fluids

被引：9

作者：

Gaiduk, Eu. A. ^{[1
,2
]}

Fomin, Yu. D. ^{[1
,2
]}

Ryzhov, V. N. ^{[1
,2
]}

Tsiok, E. N. ^{[1
]}

Brazhkin, V. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst High Pressure Phys, Troitsk 108840, Russia

[2] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia

来源：

FLUID PHASE EQUILIBRIA | 2016年 / 417卷

基金：

俄罗斯科学基金会;

关键词：

Dynamical crossover in fluids; Supercritical fluids; Core-softened systems; Positive sound dispersion; MOLECULAR-DYNAMICS; PHASE-DIAGRAM; LIQUID-METALS; MIXTURES; DIFFUSION; ANOMALIES; MODEL; MASS;

D O I：

10.1016/j.fluid.2016.02.046

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

It is well known that some liquids can demonstrate an anomalous behavior. Interestingly, this behavior can be qualitatively reproduced with simple core-softened isotropic pair-potential systems. Although the anomalous properties of liquids are usually manifested at low and moderate temperatures, it has recently been recognized that many important phenomena can appear in supercritical fluids. However, studies of the supercritical behavior of core-softened fluids have been not yet reported. In this work, we study dynamical crossover in supercritical core-softened systems. The crossover line is calculated from three different criteria, and good agreement between them is observed. It is found that the behavior of the dynamical crossover line of core-softened systems is quite complex due to its quasi-binary nature. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：237 / 241

页数：5

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