Molecular Dynamics Simulation on Micro Couette Flow of Nanofluids

被引:0
|
作者
Cui, Wenzheng [1 ]
Bai, Minli [1 ]
Lv, Jizu [2 ]
Li, Xiaojie [2 ]
机构
[1] Dalian Univ Technol, Sch Energy & Power Engn, Dalian 116024, Peoples R China
[2] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
来源
MATERIALS AND DESIGN, PTS 1-3 | 2011年 / 284-286卷
基金
中国国家自然科学基金; 中国博士后科学基金;
关键词
Nanofluids; Molecular Dynamics Method; Couette Flow; Mechanism; Heat Transfer Enhancement; STOKES DRAG; INTERFACE;
D O I
10.4028/www.scientific.net/AMR.284-286.658
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
This research applied molecular dynamics method to micro Couette flow of nanofluids, in order to examine the absorption layer near solid surfaces, and propose mechanisms of heat transfer enhancement due to flow. The model of nanofluids consisted of 4 nm Cu nanoparticles and liquid argon as base liquid, Lennard-Jones potential function was adopted to deal with the interactions between atoms. Through visual observation and analysis, it was found that the even-distributed liquid argon atoms near solid surfaces could be seemed as a reform to base liquid and had contributed to heat transfer enhancement. In the process of Couette flow, nanoparticles were rotating and vibrating besides moving translationally. The micro-motions of nanoparticles could disturb the continuity of fluid and strengthen partial flow nearby nanoparticles, and enhance heat transfer in nanofluids.
引用
收藏
页码:658 / +
页数:2
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