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The need to speed up calculation and improve analytical accuracy of  Casting CAE has grown with optimized casting planning and speeded-up product  design. A finite difference method using regular grid of Cartesian  coordinates is often used in simulating mold filling because it reduces  memory requirements, computation time and easier grid generation. Its  disadvantage is that shape expression becomes less precise so that casting  slopes and curved surfaces are replaced to stair-step shape. The mold  filling simulation developed using porous media method in this paper  provides uses two control volume parameters -- porosity rate of grid volume  and permeability of grid surface -- to maintain shape expression and  analytical accuracy. Results used larger grids than conventionally have with  almost the same accuracy as analysis with fine grids. It has also advantages  saving on memory and computation time.

High-Performance Simulation of Mold Filling Using Porous Media Method