A Numerical Investigation of Turbulent Magnetic Nanofluid Flow inside Square Straight Channel

Abstract

A numerical study using computational fluid dynamics method with a single-phase approach has been presented in order to determine the effects of the concentration of nanoparticles and flow rate on the convective heat transfer and friction factor in turbulent regime flowing through a square duct with Reynolds number range of 10000 ? Re ? 1000000 using constant applied heat flux around the duct. The nanofluid used consisted of Fe3O4 magnetic nanoparticles with an average diameter of 13 nm dispersed in water with six volume fractions (0, 0.6, 0.8, 1, 1.5 and 2%). The results revealed that as volume fraction and Reynolds number increased, Nusselt number increased, and friction factor decreased as Reynolds number increased.