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The thermosolutal instability of Walters' (model B') fluid in porous medium is considered in the presence of uniform vertical magnetic field to include the effect of Hall currents. For the case of stationary convection, the stable solute gradient and magnetic field have stabilizing effects on the system, whereas the Hall currents have destabilizing effect on the system. The medium permeability has both stabilizing and destabilizing effects on the system depending on the Hall parameter M. The kinematic viscoelasticity has no effect for stationary convection. The kinematic viscoelasticity, stable solute gradient and magnetic field (and the corresponding Hall currents) introduce oscillatory modes in the system, which were non-existent in their absence. The sufficient conditions for the non-existence of overstability are also obtained.
Czasopismo
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Tom
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677--690
Opis fizyczny
Bibliogr. 11 poz.
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- Department of Applied Sciences, Regional Engineering College, Hamirpur, (H. P.) - 177 005, India
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Bibliografia
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bwmeta1.element.baztech-article-BAT4-0002-0024