Heat transfer analysis of the cooling of TiO2-water nanofluid in a pipe under magnetic field

Abstract

Adding nanoparticles to the basic fluid and applying an external magnetic field to a duct, which is one of the techniques to increase heat transfer in recent years, is one of the frequently studied topics in the literature. Nowadays, the rapidly depletion of fossil fuels due to the increasing human population is constantly prompting researchers to investigate new heat transfer enhancement techniques. For this purpose, in this study, heat transfer phenomena have been investigated by adding various amounts of TiO₂ nanoparticles to the base fluid and applying an external magnetic field to the duct (Both local and average Nu number). The numerical study was carried out with ANSY-Fluent commercial software programmer. The study has been analyzed for various Ha, nano fluid volumetric ratios and Re numbers. It has concluded that both nanoparticle and magnetic field strength are effective in changing the heat transfer, and the magnetic field can be used as a control parameter for the nanofluid.