Proceedings of the
International Conference on Mechanical Engineering 2009
(ICME2009) 26- 28 December 2009, Dhaka, Bangladesh

ICME09-FM-34

MHD NATURAL CONVECTION FLOW FROM A POROUS
VERTICAL PLATE

Amena Ferdousi1and M. A. Alim2
1Department of Electronics and Electrical Engineering, Eastern University, Bangladesh
2Department of Mathematics, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh.

ABSTRACT

An analysis of MHD natural convection flow from a porous vertical plate is carried out by using finite difference method together with Keller-Box scheme. This method is applied successfully to predict the surface shear stress , the rate of heat transfer, velocity and temperature profiles . The governing boundary layer equations are first transformed into a non dimensional form and the resulting non linear system of partial differential equations are then solved numerically. The numerical results of the surface shear stress in terms of skin friction coefficient and the rate of heat transfer in terms of local Nusselt number, velocity as well as temperature profiles are shown graphically and tabular form for a selection of parameters set of consisting of magnetohydrodynamic parameter M, Prandtl number Pr. MHD affects the boundary layer flow, so velocity decreases and temperature increase for this the skin friction coefficient and the rate of heat transfer decreases. Increasing value of MHD serves to thin the boundary layer.
 

Keywords: porous plate, natural convection, magnetohydrodynamic.

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