Abstract:
An electrically conducting fluid flowing between two parallel plates has been considered
in this study. The fluid flow is unsteady and a magnetic field is applied
perpendicular to the plates. Various configurations have been considered for the
plates with either one plate moving or both plates moving in opposite directions
relative to each other. The whole system is then rotated in a direction normal
to the plates with a constant angular velocity Ω. Temperature and concentration
gradients have been considered across the plates. The Hall current effect has also
been put into consideration when studying the fluid flow. The effects of changing
various parameters on the velocity, temperature and concentration profiles has
been discussed. These parameters include the rotation parameter Er, the Schmidt
number Sc, the Hall parameter m, the suction parameter S, the Eckert number
Ec, the pressure gradient dP
dx and time t. The results that are obtained are then
presented on graphs and the observations are discussed. Later the effect of changing
these parameters on the skin friction, the rate of heat transfer and the rate of
mass transfer are studied. The results that are obtained are presented in tables
and then discussed.
The effect of changing the parameters mentioned above is observed either to increase,
to decrease or to have no effect on the velocity profiles, the temperature
profiles, the concentration profiles, the skin friction and the rates of heat and mass
transfer.
