Effect of Viscous Dissipation on an MHD Free Convective Flow Past a Semi-Infinite Vertical Cone with a Variable Surface Heat Flux
G. Palani, A. R. Ragavan, E. Thandapani
Keywords: magnetohydrodynamics, viscous dissipation, Nusselt number, free convection, vertical cone
Abstract
An analysis is presented to investigate the influence of viscous dissipation on a free convection flow over a vertical cone with a variable surface heat flux under the action of a transverse magnetic field. The heat transfer characteristics of the free convection flow are investigated numerically. Numerical solutions for transformed governing equations with a variable surface heat flux are obtained. Velocity, temperature, local shear stress, and heat transfer coefficients are calculated for various values of the problem parameters and presented in the graphical form. The effects of the magnetic parameter, the dissipation number, the power-law index, the angle between the cone generatrix and the vertical line, and the Prandtl number on the flow are discussed. For validation of the present numerical results, they are compared with available experimental data and are found to agree well.
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