期刊
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
卷 81, 期 -, 页码 42-50出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2016.12.010
关键词
Model; Thermal conductivity; Nanofluids; CNTs; Anisotropic material
资金
- National Natural Science Foundation of China [51506028]
- Natural Science Foundation of Jiangsu Province of China [BK20150607]
Thermal conductivity models for nanotube based nanofluids are less common than those for nanofluids containing spherical nanoparticles In this paper, a renovated Hamilton-Crosser model for the effective thermal conductivity of carbon nanotubes (CNTs) based nanofluids is proposed by simulating an equivalent anisotropic nanoparticle. The thermal conductivity of the anisotropic nanoparticle is deduced by analyzing the heat conduction process of a single CNT with an interfacial layer in an arbitrary direction. The present model which contains the effect of CNTs' diameter and aspect ratio as well as the interfacial layer was analyzed and validated with other models and available experimental data. The results show that the present model exhibits a more moderate variety rate driven by the diameter and aspect ratio of CNTs. And this characteristic results in a better adaptability than other models when compared with some available experimental results. (C) 2016 Elsevier Ltd. All rights reserved.
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