Three dimensional MHD laminar source flow between porous disks

The three dimensional magnetohydrodynamic laminar source flow between two infinite rotating porous insulating disks is investigated including the effect of induced radial electric field. The solution is obtained by perturbing the source free flow solution using reduced source Reynolds number Rsub(e)* as the perturbation parameter. Asymptotic solutions are obtained for velocity perturbation when Rsub(w)<M2,Rsub(w) and M being injection or suction Reynolds number and Hartmann number respectively. The interaction of source, injection, magnetic field and induced radial electric field with the flow are discussed in detail. It is observed that increase in source Reynolds number Rsub(e)* decreases the magnitude of the angular velocity and increases the magnitude of radial velocity. Further, it is noted that due to induced radial electric field, there is a marked change in angular velocity profiles. (author)