Unsteady MHD Couette-Hartmann flow through a porous medium bounded by porous plates with Hall current, ion-slip and Coriolis ‎effects

Subject Areas : International Journal of Industrial Mathematics

J. K. Singh‎‎ ¹ , S. Ghousia ‎Begum‎ ² , N. Joshi‎‎ ³

1 - Department of Mathematics, V. S. K. University, Bellary-583105, INDIA.
2 - Department of Mathematics, V. S. K. University, Bellary-583105, INDIA.
3 - Department of Mathematics, V. S. K. University, Bellary-583105, INDIA.

Received: 2016-11-16 Accepted : 2016-11-16 Published : 2016-11-01

Keywords: Magnetic field, Hall current, Ion-slip, Coriolis force, Permeability and suction/‎inje,

Abstract :

Effects of Hall current, ion-slip and Coriolis force on unsteady MHD Couette-Hartmann flow of a viscous incompressible electrically conducting fluid through a porous medium bounded by porous plates in the presence of a uniform transverse magnetic field which is either fixed relative to the fluid or to the moving porous plate is investigated using Laplace transform technique. The expressions for the fluid velocity and shear stress at the moving porous plate are also derived. In order to analyze the physical significance and characteristic features of the problem, the graphs for velocity distribution and shear stress distribution at the moving porous plate are generated for different values of non-dimensional parameters. It is observed that the fluid velocity when magnetic field is fixed relative to the moving porous plate is always more than the fluid velocity when magnetic field is fixed relative to the fluid while the shear stress at the moving porous plate when magnetic field is fixed relative to the moving porous plate is always less than the shear stress at the moving porous plate when magnetic field is fixed relative to the ‎fluid.