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Journal of Applied Fluid Mechanics، جلد ۵، شماره ۴، صفحات ۴۵-۵۲
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عنوان انگلیسی Thermosolutal Magneto - Rotatory Convection In Couple - Stress Fluid through Porous Medium
چکیده انگلیسی مقاله The thermosolutal convection in a couple-stress fluid layer heated and soluted from below in porous medium is considered to include the effects of uniform vertical magnetic field and uniform vertical rotation. Following the linearized stability theory and normal mode analysis, the dispersion relation is obtained. For the case of stationary convection, the stable solute gradient and rotation have stabilizing effects on the system. In the presence of rotation, the medium permeability has a destabilizing (or stabilizing) effect whereas magnetic field and couple-stress parameter have stabilizing (or destabilizing) effect on the system. On the other hand, in the absence of rotation, medium permeability has a destabilizing effect whereas magnetic field and couple-stress parameter have a stabilizing effect. The dispersion relation is also analyzed numerically. The stable solute gradient, rotation and magnetic field introduce oscillatory modes in the system, which were nonexistent in their absence. A condition for the system to be stable is obtained by using Rayleigh-Ritz inequality
کلیدواژه‌های انگلیسی مقاله Thermosolutal convection, Couple, Uniform vertical rotation, stress fluid, Porous medium, Uniform vertical magnetic field
نویسندگان مقاله P. Kumar |
Dept. of Mathematics, ICDEOL, Himachal Pradesh University, Shimla-171005, H.P. India.

نشانی اینترنتی https://www.jafmonline.net/article_1345_83f74038fe9b4df44f38705f0162adab.pdf
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