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Thermosolutal convection in Rivlin-Ericksen fluid in the presence of Hall currents in a porous medium in hydromagnetics

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The thermosolutal instability of a layer of a Rivlin-Ericksen elastico-viscous fluid is considered in the presence of a uniform horizontal magnetic field to include the Hall currents in a porous medium. For the case of stationary convection, the Hall currents hasten the onset of convection, the magnetic field postpones the onset of convection, medium permeability also postpones the onset of convection in the presence of the Hall currents, whereas the kinematic viscoelasticity has no effect on the onset of convection. The Hall currents, kinematic viscoelasticity, magnetic field, medium permeability and the solute parameter introduce oscillatory modes in the system, which were non-existent in their absence. The case of overstability is also considered wherein the sufficient conditions for the non-existence of overstability are obtained.
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Bibliografia
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  • Sharma R.C. and Sunil (1996): Thermal instability of compressible finite−Larmor− radius Hall plasma in a porous medium. − J. Plasma Phys., vol.55, No.1, pp.35-45.
  • Sharma R.C., Sunil S. and Chand S. (2000): Hall effect on thermal instability of Rivlin-Ericksen fluid. − Indian J. Pure Appl. Math., vol.31, No.1, pp.49-59.
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bwmeta1.element.baztech-article-BPZ5-0026-0006
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