Effect of Surface Tension and Hall Currents on Rotatory Magneto-Thermosolutal Convection of Ferromag

The effect of Hall currents, rotation, surface tension, and the solute parameter on the onset of convection in a porous medium layer saturated by an electrically conducting ferromagnetic fluid heated from below is investigated in this study using linear stability analysis. The momentum equations for a porous medium are modelled using Darcy's law for ferromagnetic fluid. The polarisation force and body couple effects are accounted for in the model. The physical problem's coupled partial differential equations are reduced to a number of ordinary differential equations using the normal mode technique.For the case of stationary convection, these equations are solved analytically for stress-free limits, and numerical results are computed by obtaining approximate solutions using the Galerkin method using the programme Mathematica. The magnetic field and magnetization have a stabilising effect, delaying the onset of thermal instability; however, Hall currents and the solute parameter hasten the onset of thermal instability.Under such conditions, the medium's permeability and rotation hasten the initiation of convection. The effect of surface tension dissipates the energy of any disturbance more effectively than the magnetic field, and it is crucial in generating complete stability.

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