期刊
EXPERIMENTAL HEAT TRANSFER
卷 31, 期 3, 页码 251-274出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/08916152.2017.1410504
关键词
nano-fluid; stability ratio; perikinetic conduction; Brownian motion; thermal conductivity
The article represents an experimentally supported quantitative analysis to observe the effect of time, temperature, nanoclusters' morphology, and instantaneous volume fractions on perikinetic heat conduction and Brownian motion-based induced convection mechanisms of oxide (Al2O3 and TiO2, size 25-30nm) based nanofluids. The appropriate models of thermal conductivity have been introduced to study the effect of various parameters such as; varying volume fractions, suspensions' stabilities, nanoclusters' growth, temperature, and the liquid layering. The developed model could predict the thermal conductivity enhancements of nanofluids within the accuracy of 0.5% to 4.5.0% in the temperature range from 20 degrees C to 50 degrees C.Abbreviations: DI: De-ionized water; DLS: Dynamic light scattering; XRD: X-rays diffraction; TEM: Transmission electronic microscope; SDBS:Sodium dodecyl benzene sulphonate.Figure Effect of temperature on the Brownian Reynold number for Al2O3-H2O and TiO2-H2O nanofluids. [GRAPHICS] .
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