Slip Flow of MHD Casson-Nanofluid Past a Variable Thickness Sheet with Joule Heating and Viscous Dissipation: A Comparative Study Using Three Base Fluids

In the present article, we discussed the influence of viscous dissipation and Joule heating on the slip flow of non-Newtonian nanofluid due to stretching of a variable thickness surface. The impacts of Lorentz force and space dependent heat sink/source are also contemplated. Cu nanoparticles are blended with water/kerosene/methanol base fluids to form nanofluids. We first converted the basic flow equations into ODEs by making use of appropriate similarity transmutations and solution is obtained by the application of shooting and R.K. methods. From the solution we found that the flow field is affected by Casson parameter, non uniform heat parameters, volume fraction of nanoparticles and Eckert number etc. Hence graphs are presented to discuss the impact of such parameters on velocity and temperature distributions. Further the friction factor and heat transfer coefficient are calculated and given in a table. We observe that the order of heat transfer ability of the base fluids is water < methanol < kerosene. A change in the volume fraction of nanoparticles is not showing any notable effect on the fluids having high Prandtl number.