纳米流体
热导率
纳米颗粒
粘度
材料科学
分子动力学
工作(物理)
热的
纳米流体学
化学物理
边值问题
传热
电导率
周期边界条件
纳米技术
热力学
复合材料
化学
物理
物理化学
计算化学
量子力学
作者
Hongbo Kang,Kun Zhang,Mujie Yang,Ling Li
出处
期刊:Journal of Nanotechnology in Engineering and Medicine
[ASME International]
日期:2012-05-01
卷期号:3 (2)
被引量:36
摘要
Effect of nanoparticle aggregation on the transport properties that include thermal conductivity and viscosity of nanofluids is studied by molecular dynamics (MD) simulation. Unlike many other MD simulations on nanofluids which have only one nanoparticle in the simulation box with periodic boundary condition, in this work, multiple nanoparticles are placed in the simulation box which makes it possible to simulate the aggregation of the nanoparticles. Thermal conductivity and viscosity of the nanofluid are calculated using Green–Kubo method and results show that the nanoparticle aggregation induces a significant enhancement of thermal conductivity in nanofluid, while the increase of viscosity is moderate. The results also indicate that different configurations of the nanoparticle cluster result in different enhancements of thermal conductivity and increase of viscosity in the nanofluid.
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