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Keywords
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clustering, liquid-solid, molecular dynamics simulation (MDS), nanofluid,
nanochannel
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Abstract
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The atomic behavior of liquid-solid mixed-phase nanofluid flows inside
nanochannels is investigated by a molecular dynamics simulation (MDS). The results of
visual observation and statistic analysis show that when the nanoparticles reach near
each other, the strong interatomic force will make them attach together. This aggregation
continues until all nanoparticles make a continuous cluster. The effect of altering the
external force magnitude causes changes in the agglomeration rate and system enthalpy.
The density and velocity profiles are shown for two systems, i.e., argon (Ar)-copper (Cu)
nanofluid and simple Ar fluid between two Cu walls. The results show that using nanoparticles
changes the base fluid particles ordering along the nanochannel and increases the
velocity. Moreover, using nanoparticles in simple fluids can increase the slip length and
push the near-wall fluid particles into the main flow in the middle of the nanochannel.
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