Magnetohydrodynamic free convective effect for an incompressible viscous fluid past an infinite limiting surface

Astronomy and Astrophysics – Astrophysics

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Free Convection, Magnetohydrodynamic Flow, Porous Walls, Stellar Magnetic Fields, Stellar Structure, Suction, Conducting Fluids, Convective Heat Transfer, Flow Characteristics, Grashof Number, Incompressible Flow, Viscous Flow

Scientific paper

A two-dimensional steady hydromagnetic flow of a viscous, incompressible, and electrically-conducting fluid past a porous and infinite limiting surface with a constant suction is considered. The presence of an externally uniform magnetic field which is perpendicular at the surface, of constant heat flux at the limiting surface, of constant free velocity, and of a magnetic Reynolds number which is not small is assumed. The Prandtl number is taken to be equal to 0.71, which corresponds physically to the air, and the dimensional velocity is taken to be equal to one. It is found that the temperature increases with increasing Grashof number, that the dimensionless skin friction increases with increase in the magnetic parameter, and that the Nusselt number decreases when the magnetic parameter increases.

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