Duct flow with a transverse magnetic field at high Hartmann numbers

Finite element methods can be used for determining the ow in a straight channel under a variety of wall conductivity conditions when a uniform magnetic eld is imposed perpendicular to the ow direction. At high Hartmann numbers oscillatory solutions are found unless su cient points are placed within the Hartmann layers. In some one- and two-dimensional problems it appears that it is adequate to place one or two points within the Hartmann layer to remove the oscillations. Central core values can sometimes be predicted with good accuracy even when the Hartmann layers are not resolved adequately. A nine-point Gauss point rule has been used to evaluate the sti ness and other matrices for the eight-node elements