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http://dx.doi.org/10.3795/KSME-A.2012.36.3.253

Numerical Method for Improving the Accuracy of Molten Metal Flow  

Choi, Young-Sim (Korea Institute of Industrial Technology)
Hong, Jun-Ho (Korea Institute of Industrial Technology)
Hwang, Ho-Young (Korea Institute of Industrial Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.36, no.3, 2012 , pp. 253-258 More about this Journal
Abstract
The Cartesian grid system has generally been used in casting simulations, even though it does not represent sloped and curved surfaces very well. These distorted boundaries cause several problems, and special treatment is necessary to resolve them. A cut cell method on a Cartesian grid has been developed for the simulation of threedimensional mold filling. Cut cells at a cast/mold interface are generated on Cartesian grids, and the governing equations are computed using the volume and areas of the cast at the cut cells. In this paper, we propose a new method based on the partial cell treatment (PCT) that can consider the cutting cells which are cut by the cast and the mold. This method provides a better representation of the surface geometry, and will be used in the computation of velocities that are defined on the cell boundaries in the Cartesian gird system. Various test examples for several casting process are computed and validated.
Keywords
Cartesian Grids System; Body-Fitted Coordinate System; Cut Cell; Momentum Loss; Molten Metal Flow;
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