Numerical Solution of Natural Convective Heat Transfer Under Magnetic Field Effect

Abstract

In this study, non-Newtonian pseudoplastic fluid flow equations for 2-D steady, incompressible, the natural convective heat transfer are solved numerically by pseudo time derivative. The stability properties of natural convective heat transfer in an enclosed cavity region heated from below under magnetic field effect are investigated depending on the Rayleigh and Chandrasekhar numbers. Stability properties are studied, in particular, for the Rayleigh number from 10 4 to 10 6 and for the Chandrasekhar number 3, 5 and 10. As a result, when Rayleigh number is bigger than 10 6 and Chandrasekhar number is bigger than 10, the instability occurs in the flow domain. The results obtained for natural convective heat transfer problem are shown in the figures for Newtonian and pseudoplastic fluids. Finally, the local Nusselt number is evaluated along the bottom wall. © 2019 Serpil Şahin et al., published by Sciendo 2019.