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

ICME09-TH-11

MAGNETOHYDRODYNAMIC (MHD)-CONJUGATE FREE
CONVECTION FLOW FROM AN ISOTHERMAL HORIZONTAL
CIRCULAR CYLINDER WITH JOULE HEATING EFFECT

M. A. Azim1, S. Binte Mahtab2, M. K. Chowdhury3
1School of Business studies, Southeast University, Dhaka, Bangladesh
2Department of Water Resources Engineering, Bangladesh University of Engineering and Technology,
Dhaka, Bangladesh
3Department of Mathematics, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

ABSTRACT

Magnetohydrodynamic(MHD)-conjugate natural convection flow along the outer surface from the lower stagnation point to the upper stagnation point and from an isothermal horizontal circular cylinder considering Joule heating effect is investigated. The developed governing equations with the associated boundary conditions for this analysis are transferred to dimensionless forms using a suitable transformation. The transformed non-dimensional governing equations are then solved using the implicit finite difference method with Keller box-scheme. Numerical results are found for different values of the Joule heating parameter, Magnetic parameter and Prandtl number. Detail results of the velocity profiles, temperature distributions, the skin friction and the rate of heat transfer are shown graphically.

Keywords: Natural Convection, Horizontal Cylinder, Magneto Hydrodynamic, Joule Heating, Conduction.

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