Numerical simulation for thermal flow filling process of casting

• Published in: Transactions of Nonferrous Metals Society of China Vol. 16; no. A02; pp. 214 - 218
• Main Author: 陈晔 赵宇宏 侯华
• Format: Journal Article
• Language: English
• Published: College of Materials Science and Engineering, North University of China, Taiyuan 030051, China%College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China 01.09.2006
• Subjects: 压力场; 数值模拟; 浇注过程; 自由面; 速度场; free surface; thermal flow; computation efficiency; filling process; numerical simulation
• ISSN: 1003-6326

The solution algorithm （SOLA） method was used to solve the velocity and pressure field of the thermal flow filling process, and the volume of fluid （VOF） method for the flee surface problem. Since the ＂donor-acceptor＂ rule often results in the free interface vague, the explicit difference method was adopted, and a method describing the flee surface state at 0〈F〈 1 was proposed to deal with this problem. In order to raise the computation efficiency, such algorithms were investigated and invalidated as： 1） internal and external area separation simplification algorithm; 2） the reducing necessary search area method. With the improved algorithms, the filling processes of the valve cover castings with gravity cast and an up cylinder block casting with low-pressure cast were simulated, the simulation results are believable and the computation efficiency is greatly improved. The SOLA-VOF model and its difference method for thermal fluid flow filling process were introduced.