Abstract
This Letter reveals an experimental investigation of rheological properties of Fe3O4 nanoparticles dispersed in 60:40%, 40:60% and 20:80% (by weight) ethylene glycol and water mixture. Magnetic nanoparticles were synthesized by chemical coprecipitation method. The experiments were carried out in the particle volume concentration range from 0.0% to 1.0% and temperature range from 0°C to 50°C. Viscosity of nanofluid increases with increase of volume concentration and decreases with increase of temperature. The results indicate that the 60:40% EG/W based nanofluid is 2.94 times more viscous compared to the other base fluids. Einstein model was under predicting the experimental viscosity for all the base fluids.
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