Reduced viscosity

Engineering

Oxide

Nanoparticle

Metallurgy

Materials science

Relative viscosity

Chemical engineering

Volume fraction

Thermodynamics

Physics

Correlation

Nanotechnology

Organic chemistry

Mathematics

Geometry

Composite material

Rheology

Nanofluid

Chemistry

Viscosity

Ethylene glycol

Volume (thermodynamics)

Physica E Low-dimensional Systems and Nanostructures

In this paper, the nanofluid dynamic viscosity composed of CeO2- Ethylene Glycol is examined within 25–50 °C with 5 °C intervals and at six volume fractions (0.05, 0.1, 0.2, 0.4, 0.8 and 1.2%) experimentally. The nanofluid was exposed to ultrasound waves for various durations to study the effect of this parameter on dynamic viscosity of the fluid. We found that at a constant temperature, nanofluid viscosity increases with increases in the volume fraction of the nanoparticles. Also, at a given volume fraction, nanofluid viscosity decreases when temperature is increased. Maximum increase in nanofluid viscosity compared to the base fluid viscosity occurs at 25 °C and volume fraction of 1.2%. It can be inferred that the obtained mathematical relationship is a suitable predicting model for estimating dynamic viscosity of CeO2- Ethylene Glycol (EG) at different volume fractions and temperatures and its results are consistent to laboratory results in the set volume fraction and temperature ranges.

An experimental study on rheological behavior of a nanofluid containing oxide nanoparticle and proposing a new correlation