HEAT TRANSFER OF MOLTEN METAL INFILTRATE THROUGH SiC PREFORM IN CENTRIFUGAL FORCE FIELD
In this paper,molten aluminum flow with heat transfer though SiC porous media in a centrifugal force field is described with a mathematical and physical model.The implicit TDMA Algorithm and first kind of first-order upwind difference were used to solve the conservation equation associated with appropriate boundary conditions.The distribution of molten aluminum velocity and pressure,the temperature field of flow and porous media in a centrifugal force field are examined for different conditions.The results show that local temperature of fluid phase is higher than that of solid phase.The temperature difference between fluid and solid decreases with the moving of infiltrated distance.The infiltration of molten aluminum through SiC porous media in the centrifugal force field depends greatly on the angular velocity and the temperature of preheated SiC porous media.SiC volume fraction has a strong effect on velocity and pressure drop of molten aluminum.