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Combination of magnetic field and internal heat generation effects on double-diffusive convection in nanofluids layer is applied in the existence of Soret and Dufour effects. The model employed for the nanofluids as- sociates with the Brownian motion and thermophoresis. Linear stability theory upon normal mode technique is used and the eigenvalue solution is obtained by using the Galerkin technique. On the stationary convection, it is observed that the application of magnetic field stabilizes the system while internal heat generation destabilizes the system. The analysis also reveals that it is possible to delay the onset of convection through nanofluids parameters in the system. [ABSTRACT FROM AUTHOR]

Combined effect of magnetic field and internal heat generation on the onset of Rayleigh-Bénard convection in a horizontal micropolar fluid layer is studied. The bounding surfaces of the liquids are considered to be rigid-free, rigid-rigid, and free-free with combination isothermal on the spin-vanishing boundaries. A linear stability analysis is used and the Galerkin method is employed to find the critical stability parameters numerically. The influence of various parameters on the onset of convection has been analyzed. It is shown that the presence of magnetic field always has a stability effect on the Rayleigh-Bénard convection in micropolar fluid. [ABSTRACT FROM AUTHOR]