To predict the solidification structure of an actual casting by simulating the solidification analysis and solidification structure by a successive core generating method in which the process of core generation is repeatedly set and updated for each time step.
The information on the core generation is set on a micro element for the calculation of the core structure, and the heat transfer is calculated. The information on the temperature and flow speed vector obtained from a heat transfer element (macro) is given to the micro element belonging to each heat transfer element by an interpolation method. In the micro element, the growth process of the crystal in a solid state condition is calculated to calculate the core generation process. Then, the information on the core generation of a molten metal in bulk is set, the frequency of the core generation is defined as a function of the supercooling and calculated for each step. The change in solid state ratio due to the core generation and growth is calculated, the change in solid state ratio is integrated, and reduced for the generation of the latent heat. The information on core generation is reset in a heat transfer calculation step, and similar calculation is repeated until solidification is completed.
OKANE TOSHIMITSU
UMEDA TAKATERU
OKANE TOSHIMITSU
UMEDA TAKATERU