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Journal of Applied Fluid Mechanics، جلد ۴، شماره ۴، صفحات ۴۳-۵۲
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عنوان انگلیسی Effect of Rotation on Double-Diffusive Convection in a Magnetized Ferrofluid with Internal Angular Momentum
چکیده انگلیسی مقاله This paper deals with the theoretical investigation of the effect of rotation in a magnetized ferrofluid with internal angular momentum, heated and soluted from below subjected to a transverse uniform magnetic field. For a flat fluid layer contained between two free boundaries, an exact solution is obtained. A linear stability analysis theory and normal mode analysis method have been carried out to study the onset of convection. The influence of various parameters like rotation, solute gradient, magnetization and internal angular momentum parameters (i.e. coupling parameter, spin diffusion parameter and heat conduction parameter) has been analyzed on the onset of stationary convection. The critical magnetic thermal Rayleigh number for the onset of instability is also determined numerically for sufficiently large values of buoyancy magnetization parameter M1 and results are depicted graphically. The principle of exchange of stabilities is found to hold true for the ferrofluid with internal angular momentum heated from below in the absence of rotation, coupling between vorticity and spin, microinertia and solute gradient. The oscillatory modes are introduced due to the presence of the rotation, coupling between vorticity and spin, microinertia and solute gradient, which were non-existent in their absence. In this paper, an attempt is also made to obtain the sufficient conditions for the non-existence of overstability.
کلیدواژه‌های انگلیسی مقاله Ferrofluid, Internal angular momentum, Double, Magnetization, diffusive convection, Rotation
نویسندگان مقاله Sunil |
Department of Mathematics, National Institute of Technology, Hamirpur, H.P. 177 005, INDIA

P. Chand |
Department of Applied Sciences, Jawahar Lal Nehru Government Engineering College, Sunder Nagar, H.P. 174 401, INDIA

A. Mahajan |
Department of Mathematics, Central University of Himachal Pradesh, Dharamshala, - 176 215, INDIA

P. Sharma |
Department of Mathematics, National Institute of Technology, Hamirpur, H.P. 177 005, INDIA

نشانی اینترنتی https://www.jafmonline.net/article_1290_22eb956c9233acd290627faa6fc21657.pdf
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