Abstract: The effects of Ohmic heating and viscous dissipation on
unsteady laminar magneto-hydrodynamics (MHD) flow of a viscous Newtonian and
electrically conducting fluid over a rotating disk taken into account, the
variable fluid properties (density viscosity and thermal conductivity in the presence of Hall and
ion-slip currents effects have been examined. This fluid properties are taken to
be dependent on temperature. The unsteady Navier-Stokes equations along with the
energy equation are reduced to a system of ordinary differential equations by
using similarity transformations and the resulting equation system is solved
numerically by using a shooting method. Results for the details of the velocity
as well as temperature are shown graphically and the numerical values of the
skin friction and the rate of heat transfer are entered in tables.
