Fractal analysis of the effect of particle aggregation distribution on thermal conductivity of nanofluids

Wei Wei, Jianchao Cai (Corresponding Author), Xiangyun Hu, Qi Han, Shuang Liu, Yingfang Zhou

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Abstract

A theoretical effective thermal conductivity model is derived based on fractal distribution characteristics of nanoparticle aggregation. Considering two different mechanisms of heat conduction including particle aggregation and convention, the model is expressed as a function of the fractal dimension and concentration. In the model, the change of fractal dimension is related to the variation of aggregation shape. The theoretical computations of the developed model provide a good agreement with the experimental results, which may serve as an effective approach for quantitatively estimating the effective thermal conductivity of nanofluids
Original languageEnglish
Pages (from-to)2953-2956
Number of pages4
JournalPhysics Letters A
Volume380
Issue number37
Early online date9 Jul 2016
DOIs
Publication statusPublished - 26 Aug 2016

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fractals
thermal conductivity
conductive heat transfer
estimating
nanoparticles

Keywords

  • Thermal conductivity
  • Fractal
  • Aggregation distribution
  • Aggregation shape

Cite this

Fractal analysis of the effect of particle aggregation distribution on thermal conductivity of nanofluids. / Wei, Wei; Cai, Jianchao (Corresponding Author); Hu, Xiangyun; Han, Qi; Liu, Shuang; Zhou, Yingfang.

In: Physics Letters A, Vol. 380, No. 37, 26.08.2016, p. 2953-2956.

Research output: Contribution to journalArticle

Wei, Wei ; Cai, Jianchao ; Hu, Xiangyun ; Han, Qi ; Liu, Shuang ; Zhou, Yingfang. / Fractal analysis of the effect of particle aggregation distribution on thermal conductivity of nanofluids. In: Physics Letters A. 2016 ; Vol. 380, No. 37. pp. 2953-2956.
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AU - Zhou, Yingfang

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