| Abstract: |
| In the present research a simplified mathematical model is numerically studied for heat transfer and entropy generation analysis of non Newtonian nanofluids effected by the different shape of the nanoparticles. The flow is induced by the non-linear stretching of the porous horizontal surface with fluid occupying a space over the surface. Non Newtonain Casson fluid model is utilized for the nanofluids and thermal conductivity is to vary as a linear function of temperature. Moreover a uniform magnetic field is applied in the transverse direction to the flow with slip and convective boundary conditions are employed at the boundary. The mathematical formulation is carried out through boundary layer approach and the numerical computations are carried out using Keller box method. The numerical results are presented for five different nanoparticles shapes namely, sphere, hexahedron, tetrahedron, cylinder and lamina. The effect non dimensional physical parameters appearing in the system have been observed on temperature and entropy of the system, velocity gradient (skin friction coefficient) and the strength of convective heat exchange (Nusselt number). |
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