Abstract The sand shot in the DISAMATIC process is simulated by the discrete element method (DEM) taking into account the influence and coupling of the airflow with computational fluid dynamics (CFD). The DEM model is calibrated by a ring shear test, a sand pile experiment and a slump test. Subsequently, the DEM model is used to model the propagation of the green sand inside the mold chamber and the results are compared to experimental video footage. The chamber contains two cavities designed to quantify the deposited mass of green sand. The deposition of green sand in these two cavities is investigated with three cases of different air vent settings which control the ventilation of the chamber. These settings resulted in different air- and particle-velocities as well as different accumulated masses in the cavities, which were successfully simulated by the model.

中文翻译：

---

使用 DISAMATIC 过程进行砂型生产中的型腔预测

摘要 考虑气流对计算流体动力学（CFD）的影响和耦合，采用离散元法（DEM）对DISAMATIC过程中的喷砂进行模拟。DEM 模型通过环剪试验、沙桩试验和坍落度试验进行校准。随后，DEM 模型用于模拟型腔内湿砂的传播，并将结果与​​实验视频片段进行比较。该室包含两个空腔，旨在量化沉积的湿砂质量。用控制腔室通风的三种不同通风口设置来研究这两个空腔中湿砂的沉积。这些设置导致不同的空气和粒子速度以及空腔中不同的累积质量，