Magnetic field effect on heat and fluid flow over a wavy surface with a variable heat flux

The effect of magnetic field on forced heat and fluid flow over a wavy surface subjected to a heat flux proportional to (1 + x(2))" (where n is constant) is investigated. The governing equations transformed into a non-dimensional form by using appropriate dimensionless variables that eliminate the wavy surface effect from the boundary conditions. A finite difference scheme is used to solve the governing equations. The numerical results are presented for different magnitudes of magnetic field parameter, M, power law index, n, surface wavy amplitude, a and Prandtl numbers, Pr. It was found that the magnetic parameter has a significant effect on the velocity flow field and pressure gradient. Increasing the magnetic parameter will increase the temperature and reduce the heat transfer rate. (C) 2003 Elsevier B.V. All rights reserved.