中国铸造2007，Vol.4Issue(3)：206-209,4.
Derivation and application of time step model in solidification process simulation
Derivation and application of time step model in solidification process simulation
摘要
Abstract
The heat transfer during the casting solidification process includes the heat radiation of the high temperature casting and the mold, the heat convection between the casting and the mold, and the heat conduction inside the casting and from the casting to the mold. In this paper, a formula of time step in simulation of solidification is derived, considering the heat radiation, convection and conduction based on the conservation of energy. The different heat transfer conditions between the conventional sand casting and the permanent mold casting are taken into account in this formula. The characteristics of heat transfer in the interior and surface of the casting are also considered. The numerical experiments show that this formula can avoid computational dispersion, and improve the computational efficiency by about 20% in the simulation of solidification process.关键词
casting solidification/ simulation/ time step/ formula derivationKey words
casting solidification/ simulation/ time step/ formula derivation分类
信息技术与安全科学引用本文复制引用
..Derivation and application of time step model in solidification process simulation[J].中国铸造,2007,4(3):206-209,4.基金项目
The project is supported by the National Natural Science Foundation of China. (Grant No. 50605024). （Grant No. 50605024）
