In this work, we study different rheological and thermal phenomena present during laser sintering of two polystyrene (PS) particles using fully resolved numerical simulations. In our analysis, we varied the laser power, the initial temperature and the thermal convection coefficient, used different rheological descriptions for the flow behavior and in addition studied the effect of the substrate (used in the experiments) on the temperature distribution of the system. Although we are not able to fully describe the results of the experiments with our simulations for the given parameter set, we obtained important insights in the significance of thermal initial and boundary conditions by systematically studying the sintering process.

中文翻译：

---

通过数值模拟揭示两种聚苯乙烯颗粒的烧结过程

在这项工作中，我们使用完全解析的数值模拟研究了两种聚苯乙烯（PS）颗粒激光烧结过程中出现的不同流变和热现象。在我们的分析中，我们改变了激光功率，初始温度和热对流系数，对流动行为使用了不同的流变学描述，此外还研究了基材（用于实验中）对系统温度分布的影响。尽管我们无法通过给定参数集的仿真完全描述实验的结果，但通过系统地研究烧结过程，我们在热初始条件和边界条件的重要性方面获得了重要的见识。