Study of fluid flow and heat transfer of Al2O3 -water as a non-newtonian nanofluid through lid-driven enclosure

Abstract

Flow field and heat transfer of a nanofluid, whose non-Newtonian behaviour has been demonstrated in the laboratory, in a square enclosure have been numerically modelled and investigated. To estimate the viscosity of nanofluid, experimental data of Hong and Kim, 2012 have been used, and a new model has been proposed. Finally, the obtained results have been compared to those of Newtonian behaviour. The results obtained by the numerical simulation indicate that the average Nusselt number with non-Newtonian behaviour has a value less than the Newtonian behaviour.