Heat and Mass Transfer Flow through a Porous Medium with Variable Permeability and Periodic Suction

We investigate the effect of transverse magnetic field to heat and mass transfer flow in a channel filled with saturated porous medium with variable permeability and periodic suction. The dimensionless governing equations are solved using perturbation technique. The effects of velocity, temperature and concentration are studied for different magnetic Reynolds number, Schmidt number, suction parameter, and Hartmann number. It is observed that the velocity increases with decreasing suction parameter or Hartmann number, temperature decreases with increasing Prandtl number or suction parameter, while concentration increases with increasing magnetic Reynolds number or time.