射砂过程数值模拟的应用  

Application of Numerical Simulation to Core-shooting Process

作　　者：崔怡[1] 李宏亮[1] 吴浚郊[1] 

机构地区：[1]清华大学机械工程系,北京100084

出　　处：《铸造》2003年第6期415-419,共5页Foundry

摘　　要：随着铸造技术的发展,砂芯在铸造生产中所起的作用越来越大。通常采用射砂的方法来制作砂芯。随着计算机技术和流体力学理论的发展,借助两相流理论来对射砂过程进行数值模拟成为可能。本文利用两相流理论,采用双流体模型来描述射砂过程,对多种情况下的射砂过程进行了数值模拟,并且利用高速摄像的方法记录下射砂全过程。流动过程的计算结果和试验结果是基本一致的。With the development of casting technology, sand cores are playing more and more important roles in casting production, and they are normally produced with coreshooting process. With the development of computer technology and fluid dynamics, it is possible to simulate coreshooting process with the twophase flow theory. By applying the twophase flow theory, a mathematical model describing the shooting process has been built, and the shooting process has been simulated numerically in this paper. The whole shooting process has been recorded with a highspeed digital camera. To benchmark the calculating results, many cases have been recorded. The preliminary results have showed that the calculation was good in agreement with the testing result.

关 键 词：铸造 射砂过程 数值模拟 两相流 双流体模型 高速摄像 

分 类 号：TG242[金属学及工艺—铸造]