NDLI: Experimental investigation on viscosity of water-based Al2O3 and TiO2 nanofluids

Content Provider	Springer Nature Link
Author	Jarahnejad, Mariam Haghighi, Ehsan B. Saleemi, Mohsin Nikkam, Nader Khodabandeh, Rahmatollah Palm, Björn Toprak, Muhammet S. Muhammed, Mamoun
Copyright Year	2015
Abstract	This article investigates the influence of temperature, concentration, and size of nanoparticles, and addition of surfactants on dynamic viscosity of water-based nanofluids containing alumina (Al2O3) and titania (TiO2) nanoparticles. Two viscometers, a capillary and a falling ball, were used for the measurements in the temperature range of 20–50 °C and the particle concentration of 3–14.3 wt.%. The results indicate that the viscosity of nanofluids is reduced by increasing the temperature, similar to their base fluids. Moreover, surfactants, which are used to improve the shelf stability of nanofluids, most likely increase their viscosity. The correlations derived from the linear fluid theory such as Einstein and Batchelor, especially for solid concentration above 1.5 wt.% are not accurate to predict viscosity of nanofluids, while the modified Krieger-Dougherty equation estimates viscosity of nanofluids with acceptable accuracy in a specific range of solid particle size to aggregate size.
Starting Page	411
Ending Page	422
Page Count	12
File Format	PDF
ISSN	00354511
Journal	Rheologica Acta
Volume Number	54
Issue Number	5
e-ISSN	14351528
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-02-12
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanofluid Viscosity Temperature Particle size Concentration Surfactant Al2O3 TiO2 Characterization and Evaluation of Materials Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Mechanical Engineering Food Science
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Condensed Matter Physics Materials Science

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