材料期刊网

A two-dimensional model is presented to compute the steady-state flow of an Al melt in centrifugal casting with electromagnetic stirring. The distributions of Bow velocity, body forces and pressure were studied by means of numerical simulations. It was found that the tangential flow was strongest near the mold/melt interface, while the radial flow velocity increased with a decrease in the distance to the interface. The azimuthal distributions showed angle-dependent fluctuations. The flows were dramatically influenced by the rotation rate of the mold and the intensity of the imposed magnetic field. The distributions and variations of melt flow were related to the body forces discussed in the present paper. The existence and increase in magnetic field caused a decrease in the pressure in the bulk melt; this problem in practical casting might be solved by increasing the rotation rate of the mold.