期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 12, 期 3, 页码 811-821出版社
SPRINGER
DOI: 10.1007/s11051-009-9728-5
关键词
Nanofluid; Molecular dynamics simulation; Thermal conductivity; Colloids
资金
- Office of Naval Research [N00014-06-1-1119]
- Key Discipline Construction Foundation of Shanghai Municipality [J50501]
- National Natural Science Fund of China [50636050]
- Natural Science Fund of Shanghai [09ZR1422400]
The effect of the molecular layering at liquid-solid interface on the thermal conductivity of the nanofluid is investigated by an equilibrium molecular dynamics simulation. By tracking the position of the nanoparticle and the liquid atoms around the spherical nanoparticle, it was found that a thin layer of liquid is formed at the interface between the nanoparticle and liquid; this thin layer will move with the Brownian motion of the nanoparticle. Through the analysis of the density distribution of the liquid near the nanoparticle, it is found that more argon atoms are attracted to form the layer around the nanoparticle when the diameter of the nanoparticle is larger, and therefore lead to the more significant enhancement of the thermal conductivity of the nanofluid.
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