1. The role of interfacial nanolayer in the enhanced thermal conductivity of carbon nanotube-based nanofluids.
- Author
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Jiang, Haifeng, Xu, Qianghui, Huang, Chao, and Shi, Lin
- Subjects
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CARBON nanotubes , *THERMAL conductivity , *NANOFLUIDS , *HEAT transfer , *FOURIER'S law (Thermodynamics) - Abstract
Nanofluid, a new class of solid/liquid mixtures, provided theoretical challenges because the measured effective thermal conductivity containing a few loadings of nanoparticle (<5 vol%) showed greater enhancement than traditional models predicted. The solid-like nanolayer around the nanoparticle acts as a thermal bridge between the particle and the base fluid, so is a key mechanism to enhance heat transfer of nanofluid. Based on the two-dimension Fourier's law in the cylindrical coordinates, we deduced an expression for calculating the effective thermal conductivity of carbon nanotube-based nanofluid considering the interfacial nanolayer, as well as an empirical shape factor. The theoretical predictions on the enhanced thermal conductivity agree quite well with the available experimental data. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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