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Abstract
The vortex instability characteristics of laminar magneto‐hydrodynamic (MHD) natural convection flow over a horizontal plate with a prescribed surface temperature and mass flux are studied. In the base flow, similarity solutions are obtained for a specific magnetic field strength and surface mass flux. The stability analysis is based on the linear stability theory incorporated with the non‐parallel flow model. The skin‐friction factor, Nusselt number and instability parameters are obtained by conducting a parametric study of all relevant parameters, such as magnetic parameter M and blowing/suction parameter f w. It is found that the magnetic effect decreases the heat transfer rate and destabilizes the flow. Furthermore, the influence of magnetic effect on vortex instability is more pronounced for a blowing surface and fluid with Pr = 0.7. The present results can be utilized as the basis for potential engineering applications such as chemical vapor deposition and cooling of electronic packages.
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