The Classical Nature of Thermal Conduction in Nanofluids

Details The Classical Nature of Thermal Conduction in Nanofluids The Classical Nature of Thermal Conduction in Nanofluids

2008-12-31

arxiv.org/abs/0901.0058v1

Physics

Condensed Matter

Soft Condensed Matter

24 pages. Submitted to Journal of Heat Transfer

Scientific paper

Several new mechanisms have been hypothesized in the recent years to characterize the thermal conduction behavior in nanofluids. In this paper, we show that a large set of nanofluid thermal conductivity data is enveloped by the well-known Hashin and Shtrikman (HS) mean-field bounds for inhomogeneous systems. The thermal conductivity in nanofluids, therefore, is largely dependent on whether the nanoparticles stays dispersed in the base fluid, form linear chain-like configurations, or assume an intermediate configuration. The experimental data, which is strikingly analogous to those in most solid composites and liquid mixtures, provides a strong evidence for the classical nature of thermal conduction in nanofluids.

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