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-  2015 

液态金属热输运过程的分子动力学模拟
Molecular dynamics simulation of thermal transport process of liquid metal

DOI: 10.7523/j.issn.2095-6134.2015.01.005

Keywords: 分子动力学模拟,热输运,热导率,液态金属
molecular dynamics simulation
,heat transfer,thermal conductivity,liquid metal

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Abstract:

摘要 采用分子动力学模拟方法对平板间液态金属的流动换热过程进行模拟.研究液态金属的微观热输运过程,左右两侧平板采用Cu原子作为恒温固壁,液态金属Pb处于平板间,以FCC结构为初始排列.模拟结果表明,在平板间的液态金属温度分布呈线性变化;不同温度下液态金属在恒温平板间的热输运模拟过程表明,平板间液态金属的热导率随温度的升高而增加,呈现线性变化.当在系统上施加一个重力加速度时,平板间未出现明显的自然对流,表明在微尺度下,边界阻力和粘滞力抑制了液态金属的自然对流.

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