Nanofluids are created by dissolving nano-sized materials in base fluids. Nanofluids keeps enriched thermophysical properties, such as thermal viscosity, conductivity, thermal diffusivity and convective heat transfer coefficients unlike base fluids. It has numerous practical applications in various fields of engineering and medical sciences, such as thermal-power generation system, medical equipment, computer storage devises, air cooling machines, electronic devices and rotatory machinery. Nanofluids intensify thermal conductivity of the base fluid. Due to this wide range of applications researchers diverted their attentions to nanofluid dynamics.