Effect of liquid layering at the liquid-solid interface on thermal transport

L. Xue; P. Keblinski; S. R. Phillpot; S. U.-S. Choi; J. A. Eastman

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Effect of liquid layering at the liquid-solid interface on thermal transport

机译：液-固界面处的液体分层对热传递的影响

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Using non-equilibrium molecular dynamics simulations in which a temperature gradient is imposed, we study how the ordering of the liquid at the liquid-solid interface affects the interfacial thermal resistance. Our simulations of a simple monoatomic liquid show no effect on the thermal transport either normal to the surface or parallel to the surface. Even for of a liquid that is highly confined between two solids, we find no effect on thermal conductivity. This contrasts with well-known significant effect of confinement on the viscoelastic response. Our findings suggest that the experimentally observed large enhancement of thermal conductivity in suspensions of solid nanosized particles (nanofluids) can not be explained by altered thermal transport properties of the layered liquid.

机译：使用其中施加温度梯度的非平衡分子动力学模拟，我们研究了液-固界面处的液体有序性如何影响界面热阻。我们对简单的单原子液体的模拟显示，对垂直于表面或平行于表面的热传输没有影响。即使对于高度限制在两个固体之间的液体，我们也没有发现对导热性有任何影响。这与封闭对粘弹性响应的众所周知的显着影响形成对比。我们的发现表明，实验观察到的固体纳米级颗粒（纳米流体）悬浮液中导热系数的大幅提高无法用层状液体的热传输特性改变来解释。

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来源
《International Journal of Heat and Mass Transfer》 |2004年第20期|p.4277-4284|共8页
作者
L. Xue; P. Keblinski; S. R. Phillpot; S. U.-S. Choi; J. A. Eastman;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程理论;热学;
关键词
Interfacial thermal resistance; Liquid-solid interface; Molecular dynamics simulations; Nanofluids;

机译：界面热阻;液固界面;分子动力学模拟;纳米流体;

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Effect of liquid layering at the liquid-solid interface on thermal transport

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