| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Modified Maxwell model for predicting thermal conductivity of nanocomposites considering aggregation |
| Wen-Kai Zhen(甄文开)1, Zi-Zhen Lin(蔺子甄)1, Cong-Liang Huang(黄丛亮)1,2 |
1. School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116, China;
2. Department of Mechanical Engineering, University of Colorado, Colorado 80309-0427, USA |
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Abstract The effect of nanoparticle aggregation on the thermal conductivity of nanocomposites or nanofluids is typically non-negligible. A universal model (Maxwell model) including nanoparticle aggregation is modified in order to predict the thermal conductivity of nanocomposites more accurately. The predicted thermal conductivities of silica and titania nanoparticle powders are compared first with that measured by a hot-wire method and then with those in previous experimental works. The results show that there is good agreement between our model and experiments, and that nanoparticle aggregation in a nanocomposite enhances the thermal conductivity greatly and should not be ignored. Because it considers the effect of aggregation, our model is expected to yield precise predictions of the thermal conductivity of composites.
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Received: 05 May 2017
Revised: 12 June 2017
Accepted manuscript online:
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PACS:
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44.30.+v
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(Heat flow in porous media)
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44.35.+c
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(Heat flow in multiphase systems)
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| Fund: Project supported by the Fundamental Research Funds for the Central Universities of China (Grant No. 2015XKMS062). |
Corresponding Authors:
Cong-Liang Huang
E-mail: huang198564@gmail.com
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Cite this article:
Wen-Kai Zhen(甄文开), Zi-Zhen Lin(蔺子甄), Cong-Liang Huang(黄丛亮) Modified Maxwell model for predicting thermal conductivity of nanocomposites considering aggregation 2017 Chin. Phys. B 26 114401
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