Mathematical Model for Turbulent Forced Convective Heat Transfer and Friction Factor of Magnetic Nanofluid (Fe3O4/Water Nanofluid) in a Circular Tube

In this study the nanofluid used was a stable colloidal suspension of magnetic (Fe3O4) nanoparticles ofaverage diameter 32 nm. The convective heat transfer coefficient and friction factor characteristics of Fe3O4 nanofluidfor flow in a horizontal circular tube is evaluated mathematically in the range of 3000 < Re < 22000 and the nanoparticlesvolume concentration range of 0 < φ < 0.6%. The results of this study show that the Nusselt number increased withincreasing the Reynolds number and volume concentration of nanoparticles and the friction factor increased withdecreasing the Reynolds number.

Keywords:

Convective heat transfer , Friction factor , Magnetic nanofluid , Reynolds number