本文用分子动力学模拟方法研究了近固体壁面拟有序液体边界层及其导热特性.得出分子密度沿垂直壁面方向呈衰减分布,且拟有序层内的分子运动方式接近于晶体分子.结合径向分布函数定量分析得出拟有序层的有序程度随固液耦合作用加强而增加.用G-K公式计算了拟有序层的导热系数,发现其与物件尺度、边界条件有密切关系.但在相同的边界条件下,导热系数随有序程度的增加而增加.
参考文献
[1] | L. Xue;P. Keblinski;S. R. Phillpot;S. U.-S. Choi;J. A. Eastman .Effect of liquid layering at the liquid-solid interface on thermal transport[J].International Journal of Heat and Mass Transfer,2004(19/20):4277-4284. |
[2] | L.Xue;P.Keblinski;S.R.Phillpot;S.U.-S.Choi;J.A.Eastman .Two regimes of thermal resistance at a liquid-solid interface[J].The Journal of Chemical Physics,2003(1):337-339. |
[3] | L D朗道;E M栗弗席兹;杨训恺.统计物理学[M].北京:人民教育出版社,1964 |
[4] | Radu Balescu.Statistical Dynamics-Matter Out of Equilibrium[M].Imperial College Press,London,1997:193-198. |
[5] | A. J. H. McGaughey;M. Kaviany .Thermal conductivity decomposition and analysis using molecular dynamics simulations - Part I. Lennard-Jones argon[J].International Journal of Heat and Mass Transfer,2004(8/9):1783-1798. |
[6] | Jianwei Che;Tahir Cagin;Weiquao Deng;William A.Goddard III .Thermal conductivity of diamond and related materials from molecular dynamics simulations[J].The Journal of Chemical Physics,2000(16):6888-6900. |
[7] | R Vogelsang;C Hoheisel;G Ciccotti .Thermal Conductivity of The Lennard-Jones Liquid by Molecular Dynamics Calculations[J].Journal of Chemical Physics,1987,86(11):6371-6375. |
[8] | 刘静.微米/纳米尺度传热学[M].北京:科学出版社,2001 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%