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Numerical simulation of ingot solidification process based on different models
Author(s): LI Ri, GUO Ren-jun, YIN Hai-jun, FENG Chang-hai, School of Materials Science and Engineering, Hebei University of Technology
Pages: 253-
257
Year: 2013
Issue:
S2
Journal: Transactions of Materials and Heat Treatment
Keyword: solidification; Eulerian; multiphase; continuum model; volume-averaged model;
Abstract: The comparison of continuous model and volume-averaged model was studied based on the principles of metal solidification and Eulerian multiphase algorithm,and the liquid-solid interfacial morphology and structure evolutional law of the microstructure were predicted by the two models during solidification. The simulation results show that only the variation of volume fraction of liquid phase(or solid phase) during solidification is able to be exhibited by the continuous model,and the description for the ingot solidification is fuzzy; however,as to the volume-averaged model,the microstructure evolution,especially the columnar-to-equiaxed grain transition can be exhibited clearly,although the calculation load is heavy and its time costing is large; Further more,the simulation results are acceptably coincidence with the experimental ones,proving the feasibility of our algorithm.
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