Nonequilibrium molecular dynamics simulation of coupling between nanoparticles and base-fluid in a nanofluid

被引：15

作者：

Kang, Hongbo ^{[2
]}

Zhang, Yuwen ^{[1
]}

Yang, Mo ^{[2
]}

Li, Ling ^{[2
]}

机构：

[1] Univ Missouri, Dept Mech & Aerosp Engn, Columbia, MO 65211 USA

[2] Shanghai Univ Sci & Technol, Shanghai 200093, Peoples R China

来源：

PHYSICS LETTERS A | 2012年 / 376卷 / 04期

基金：

美国国家科学基金会;

关键词：

Molecular dynamics; Nanofluids; Coupling factor; Aggregation; THERMAL-CONDUCTIVITIES; ENHANCEMENT;

D O I：

10.1016/j.physleta.2011.11.009

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The intent of this study is to examine nonequilibrium heat transfer in a copper-argon nanofluid by molecular dynamics simulation. Two different methods, the physical definition method and the curve fitting method, are introduced to calculate the coupling factor between nanoparticles and base fluid. The results show that the coupling factors obtained by these two methods are consistent. The coupling factor is proportional to the volume fraction of the nanoparticle and inversely proportional to nanoparticle diameter. In the temperature range of 90-200 K. the coupling factor is not affected by temperature. The nanoparticle aggregation results in a decrease of the coupling factor. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：521 / 524

页数：4

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