In this study, the flow characteristics of Geldart A particles in a bubbling fluidized bed with and without perforated plates were simulated by the multiphase particle-in-cell (MP-PIC)-based Eulerian–Lagrangian method. A modified structure-based drag model was developed based on our previous work. Other drag models including the Parker and Wen–Yu–Ergun drag models were also employed to investigate the effects of drag models on the simulation results. Although the modified structure-based drag model better predicts the gas–solid flow dynamics of a baffle-free bubbling fluidized bed in comparison with the experimental data, none of these drag models predict the gas–solid flow in a baffled bubbling fluidized bed sufficiently well because of the treatment of baffles in the Barracuda software. To improve the simulation accuracy, future versions of Barracuda should address the challenges of incorporating the bed height and the baffles.

在这项研究中，通过基于多相孔内粒子（MP-PIC）的Eulerian-Lagrangian方法模拟了Geldart A颗粒在有孔板和无孔板的沸腾流化床中的流动特性。在我们之前的工作的基础上，开发了一种基于结构的改进的阻力模型。其他阻力模型（包括Parker和Wen-Yu-Ergun阻力模型）也用于研究阻力模型对模拟结果的影响。尽管与实验数据相比，基于结构的改进的阻力模型可以更好地预测无挡板鼓泡流化床中的气固流动动力学，但这些阻力模型都无法很好地预测挡板式鼓泡流化床中的气固流动。因为在梭子鱼软件中对挡板进行了处理。为了提高仿真精度，