Effects of nanoparticles transportmechanisms on nanofluid natural convection

چکیده مقاله

In this numerical study, effects of nanoparticles transport in natural convection of Al2O3-water nanofluid on flow field and heat transfer in a square cavity are investigated and comparisons between predictions of newly developed transport model and homogeneous one are made. Transport mechanisms including Brownian and thermophoresis diffusions which cause non-homogeneity are considered in nanoparticles transport model. Comparisons revealed that a better agreement with experimental results is achieved considering the transport model instead of the homogeneous model with equivalent properties.