An experimental study on rheological behavior of ethylene glycol based nanofluid: Proposing a new correlation as a function of silica concentration and temperature

In this study, SiO2/EG nanofluids viscosity dependence on temperature and concentration was examined. The experiments were performed in the silica volume fraction range of 0.1-3.0% under the temperatures ranging from 30 degrees C to 50 degrees C. The experimental findings revealed that all nanofluid samples were Newtonian at all temperatures considered. The measurements also showed that the dynamic viscosity rises with growing the nanoparticles concentration and diminishes with rising temperature. The values of viscosity ratio indicated that with increasing the solid volume fraction from 0,1 to 3%, the dynamic viscosity increases up to 116%. Finally, using experimental data, in order to predict the dynamic viscosity of silica/ethylene glycol nanofluids, a new correlation has been suggested. (C) 2017 Elsevier B.V. All rights reserved.