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铸件温度场数值模拟发展到今天巳有五十年历史了。但常常因计算精度不足而未广泛应用于主产实际。目前,温度场的计算方法很多,其数学模型的基础都是热传导偏微分方程。根据对热传导偏微分方程求解区域的不同,可把它们分为两大类:一类是求解区域包括铸件、铸型、有的还包括砂箱;另一类是求解区域只包括铸件。在前一类算法中,计算精度不足的主要原因是缺少铸型精确的热物性参数和对铸件与铸型界面的热阻考虑不适所致。而且此类算法还把大量机时
The numerical simulation of the temperature field of castings has been developed for fifty years now. However, it is often not widely used in the actual production due to insufficient calculation accuracy. At present, there are many methods to calculate the temperature field. The basis of the mathematical model is the heat conduction partial differential equation. According to the heat conduction partial differential equations to solve the different regions, they can be divided into two categories: one is to solve the region, including castings, molds, and some also include sand box; the other is the solution area, including only castings. In the former algorithms, the main reason for the lack of accuracy of the calculation is the lack of accurate thermophysical parameters of the mold and the discomfort of the thermal resistance of the interface between the casting and the mold. And such algorithms also take a lot of time