Convective Behavior of Geothermally Viscous Bodewadt Flow of Magnetic Nano-Suspension

A numerical investigation has been carried out to study a comparative thermal convection of magnetic nanofluids on an unsteady flow over a stationary disk. The modeled equation governing the boundary layer flow are represented with the help of the Rosenzweig-Neuringer model. To find the numerical solution, the governing coupled PDEs are discretized by the direct approach of finite difference method and discussed through graphs and tables. For the comparative discussion, a fluorocarbon-based (FC-72) and a hydrocarbon-based (90G) magnetic nanofluid are taken into consideration for weak and strong convection, respectively. The impacts of geothermal viscosity and porous medium on high and low convective fluid flow have been studied. It is noted that the boundary layer friction is enhanced by the impact of variable viscosity (geothermal), which forces the reversal movement of the fluids in the radial direction near the surface of the plate. Also, the strong convective nanofluid (90G) dissipates heat 275% faster than the weak convective nanofluids (FC-72).