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Special Topics & Reviews in Porous Media: An International Journal
ESCI SJR: 0.277 SNIP: 0.52 CiteScore™: 1.3

ISSN Печать: 2151-4798
ISSN Онлайн: 2151-562X

Special Topics & Reviews in Porous Media: An International Journal

DOI: 10.1615/SpecialTopicsRevPorousMedia.2019028377
pages 357-383

MAGNETIC FERRO-NANOFLUID FLOW IN A ROTATING CHANNEL CONTAINING DARCIAN POROUS MEDIUM CONSIDERING INDUCED MAGNETIC FIELD AND HALL CURRENTS

S. Das
Department of Mathematics, University of Gour Banga, Malda 732 103, India
B. Tarafdar
Department of Mathematics, University of Gour Banga, Malda 732 103, India
Rabindra N. Jana
Department of Applied Mathematics, Vidyasagar University, Midnapore 721 102, India
Oluwole Daniel Makinde
Faculty of Military Science, Stellenbosch University, Private Bag X2, Saldanha 7395, South Africa

Краткое описание

In this article, a fully developed magnetohydrodynamic (MHD) flow of a viscous incompressible electrically conducting ferro-nanofluid in the presence of a uniform transverse strong magnetic field has been investigated under constant pressure gradient, taking Hall currents and induced magnetic field into account in a rotating frame of reference. A Darcy model is employed to simulate drag effects in the porous medium. The base fluid is considered as water which consists of magnetite-Fe3O4 nanoparticles. The heat transfer analysis is carried out considering the viscous dissipation and Ohmic heating effects in the presence of nanoparticles. The governing equations describing the flow are solved analytically. The influences of the pertinent parameters on the velocity field, induced magnetic field, temperature, shear stresses, flow rate, and rate of heat transfer have been presented either graphically or in tabular form. The asymptotic behavior of solutions is analyzed for small and large values of magnetic parameter, rotation parameter, and Darcy number. The obtained results reveal that the Hall currents moderate the flow dynamics significantly. It is interesting to note that for strong magnetic field the boundary layer thickness is independent of rotation as well as solid volume fraction of nanoparticles. The rate of heat transfer at the upper plate of the channel for Fe3O4-water nanofluid is larger in comparison to the pure fluid.

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