砂芯在现代化铸造生产中的地位随着铸件需求量、复杂程度以及质量要求的提高而不断提升。然而迄今为止国内外仍然主要凭经验和反复试验的方法来获得均匀、致密的砂芯，缺乏相应的科学规律、科学手段指导。因此，对作为砂芯制造的主要方法的射芯过程机理进行实验研究和三维数值模拟以获得射芯过程的科学规律、优化芯盒设计及工艺方案具有一定的科学意义和明确、广阔的应用前景。本项目使用高速摄影仪、压力传感器、CT等先进的检测设备原位(in-situ)测试射砂过程，继而分析射芯过程机理。同时以颗粒动力学理论(Kinetic Theory)、摩擦-动力学理论(Frictional-Kinetic model)以及实验结果为基础建立射芯过程的三维稀疏-稠密(dilute-dense)两相流模型，使用Fortran语言结合GPU+CPU混合并行技术开发相应的并行计算程序，然后使用研究成果来解决复杂砂芯实际生产中出现的问题。

With the increase of the demands, complexity, and quality requirements of castings, the importance of sand core becomes greater continuously. However, until now trial-and-error method is still the main method used to produce uniform and dense sand cores, because of the lack of scientific rules and related methods. Therefore, it is necessary to conduct 3-D numerical simulation and experimental study of core shooting process. In this project, advanced testing equipment (e.g., high-speed camera, pressure sensors and CT) will be used to test the core shooting process in situ, and the analysis of the mechanism of core shooting process will be carried out. Simultaneously, with Kinetic Theory, Frictional-Kinetic model and the testing results, a 3-D dilute-dense two-phase flow model of core shooting process will be built, and then Fortran and GPU + CPU hybrid parallel technique will be used to develop the corresponding parallel computing program. Eventually the results achieved will be used to solve the problems appeared in the production of complex sand core.