NUMERICAL SIMULATION OF EFFECTS OF A NON-IONIZED FLUID INJECTION AND SUCTION ON THE MHD FLOW IN A CIRCULAR CHANNEL

Control of a fluid flow velocity profile by injection and suction of a non-ionized fluid in presence of a uniform steady magnetic field has important technical applications. In this paper, theunsteady incompressible and viscous conducting fluid flow has been investigated in a circular channel. The channel walls are assumed to be non-conducting and porous. They are subjected to a uniform steady magnetic field which is perpendicular to the axis of channel, then and suction andinjection are applied at the walls. The well known equations of Magnetohydrodynamics are governedto the motion of an electrically conducting fluid flow that is subjected to magnetic field. Thenumerical solution is carried out by finite difference approach. The results of present numericalsimulation shown that the flow injection and suction through the wall can be controlled effectively,the main flow in channel especially in industrial purposes. The results are obtained for differentvalues of the injected and sucked non-ionized flow rate and the effect of Hartman number on the velocity profile is investigated. Finally, a good agreement is seen between the presented results and the corresponding data of finite element method

کلیدواژه ها:

Magnetohydrodynamics flow ، Numerical simulation ، Circular channel ، Fluid injection ، Fluid suction ، CFD