PULSATILE MAGNETOHYDRODYNAMIC VISCOELASTIC FLOW-THROUGH A CHANNEL BOUNDED BY 2 PERMEABLE PARALLEL PLATES

Velocity profiles for unsteady pulsatile laminar flows of viscoelastic non-Newtonian conducting fluids through a channel have derived using the perturbation method. The induced magnetic field and wall shear have been obtained. The effects of pulsation, elasticity and the magnetic parameter on the velocity, induced magnetic field and wall shear are discussed. Results are illustrated numerically and graphically. It is found that amplitude of the pulsation increases the velocity distribution which would be obtained under steady flow conditions at the same mean pressure gradient. The effect of both the magnetic and elasticity parameters decrease the velocity distribution. Also the properties of the fluid on the induced magnetic field and the skin-friction are discussed.