Three-Dimensional Molecular Dynamics Simulation on Heat Propagation in Liquid Argon
GUO Ying-Kui, GUO Zeng-Yuan, LIANG Xin-Gang
Department of Engineering Mechanics, Tsinghua University, Beijing 100084
Three-Dimensional Molecular Dynamics Simulation on Heat Propagation in Liquid Argon
GUO Ying-Kui;GUO Zeng-Yuan;LIANG Xin-Gang
Department of Engineering Mechanics, Tsinghua University, Beijing 100084
关键词 ：
44.10.+i ,
02.70.Ns ,
61.25.Bi
Abstract ： The propagation behaviour of an initial thermal perturbation in liquid argon is simulated by the molecular dynamics method. The 12-6 Lennard--Jones potential and mirror boundary conditions are employed in the 32768-particle three-dimensional simulation. Macroscopic characteristics such as the kinetic temperature, pressure and momentum profiles are monitored during the simulation in order to examine the heat propagation behaviour under a timescale comparable with the relaxation time. The results show that the behaviour is still diffusion-like; no features predicted by the Cattaneo--Vernotte model have been found. The wave-like front of the local temperature may be caused by the adiabatic compression and expansion by the pressure wave generated by the thermal expansion.
Key words ：
44.10.+i
02.70.Ns
61.25.Bi
出版日期: 2001-01-01
引用本文:
GUO Ying-Kui;GUO Zeng-Yuan;LIANG Xin-Gang. Three-Dimensional Molecular Dynamics Simulation on Heat Propagation in Liquid Argon[J]. 中国物理快报, 2001, 18(1): 71-73.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2001/V18/I1/71
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