Fractal analysis of the effect of particle aggregation distribution on thermal conductivity of nanofluids (Revised)
نویسندگان
چکیده
21 A theoretical effective thermal conductivity model is derived based on fractal 22 distribution characteristics of nanoparticle aggregation. Considering two different 23 mechanisms of heat conduction including particle aggregation and convention, the 24 model is expressed as a function of the fractal dimension and concentration. In the 25 model, the change of fractal dimension is related to the variation of aggregation shape. 26 The theoretical computations of the developed model provide a good agreement with 27 the experimental results, which may serve as an effective approach for quantitatively 28 estimating the effective thermal conductivity of nanofluids. 29 30 Highlights 31 A thermal conductivity model is derived based on fractal aggregation distribution. 32 The relationship between aggregation shape and fractal dimension is analyzed. 33 Predictions of the proposed model show good agreement with experimental data. 34 35
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