Derivation and Application for Time Step Model in Simulation of Solidification Process
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 in the casting and 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 condition between the ordinary sand casting and the permanent mold casting is taken into account in this formula. The characteristic of heat transfer in the interior and surface of the casting is also considered. The numerical experiments show that this formula can avoid radiation of the computation, and can improve the computational efficiency about 20％ in the simulation of solidification process.
casting solidification simulation time step derivation of formula
Wenbang GONG Liliang CHEN Ruixiang LIU Jing HAO
State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan, 430074, Hubei, China
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）