| Title |
Research Paper - Solidification - : Coupled Analysis of Three Dimensional Fluid Flow , Heat Transfer and Solidification in the Filling of Castings |
| Authors |
김성빈(Sung Bin Kim); 홍준표(Chun Pyo Hong) |
| Abstract |
A numerical technique has been developed to simulate the combined fluid flow, heat transfer and solidification during filling of castings. A modified SMAC method was applied to analyze fluid flow during mold filling, and a new concept of energy marker has been proposed not only to track the moving free surface of the melt, but also to calculate convective heat transfer during the mold filling process. The present code was applied to simulate solidification sequences and to predict shrinkage cavities in automobile crank shaft castings. The comparison of two types of solidification analyses, simulations with and without consideration of fluid flow during mold filling revealed that the first method is more effective in evaluating the formation of casting defects. The present model which is based on the coupled analysis of fluid flow and heat transfer during mold filling was successfully applied to predict shrinkage cavities in shaped castings. |