  Molecular dynamics simulations are used to simulate the thermal properties of
a model fluid containing nanoparticles (nanofluid). By modelling transient
absorption experiments, we show that they provide a reliable determination of
interfacial resistance between the particle and the fluid. The flexibility of
molecular simulation allows us to consider separately the effect of
confinement, particle mass and Brownian motion on the thermal transfer between
fluid and particle. Finally, we show that in the absence of collective effects,
the heat conductivity of the nanofluid is well described by the classical
Maxwell Garnet equation model.
