| 纳米多孔氩薄膜热导率的分子动力学模拟 |
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| 引用本文： | 刘其鑫,姜培学,向恒.纳米多孔氩薄膜热导率的分子动力学模拟[J].计算物理,2008,25(4):457-462. |
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| 作者姓名： | 刘其鑫 姜培学 向恒 |
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| 作者单位： | 热科学与动力工程教育部重点实验室, 清华大学热能工程系, 北京 100084 |
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| 基金项目： | 国家自然科学基金
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清华大学基础研究基金 |
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| 摘 要： | 利用经典的Lennard-Jones势能模型,采用分子动力学模拟方法研究纳米多孔氩薄膜热导率.结果表明,纳米多孔氩薄膜热导率明显小于同温度下纯纳米氩薄膜热导率,并且孔隙率越大热导率减小越多.借助基于并联方法的有效热导率模型,对纳米多孔氩薄膜的热导率随孔隙率的变化进行解释.模拟结果还发现,薄膜内的多孔分布对薄膜的热导率有影响.
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| 关 键 词： | 热导率 多孔 纳米氩薄膜 |
| 收稿时间： | 2007-03-05 |
| 修稿时间： | 2007-09-03 |
Molecular Dynamics Study on Thermal Conductivity of Porous Argon Thin Films |
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| LIU Qixin,JIANG Peixue,XIANG Heng.Molecular Dynamics Study on Thermal Conductivity of Porous Argon Thin Films[J].Chinese Journal of Computational Physics,2008,25(4):457-462. |
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| Authors: | LIU Qixin JIANG Peixue XIANG Heng |
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| Institution: | Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | In a classical Lennard-Jones potential model,we present molecular dynamics study on thermal conductivity of porous argon thin films.It shows that thermal conductivity of porous argon thin films is remarkably lower than that of pure argon thin films.Larger porosity results in lower thermal conductivity.A thermal conductivity model based on parallel method is used to analyze thermal conductivity of argon porous thin films.It shows that pore configuration in film affects thermal conductivity. |
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| Keywords: | thermal conductivity porous nano-argon thin film |
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