A SuperDEM-CFD coupled model was developed and validated in open-source MFiX for simulating non-spherical particles fluidization hydrodynamics in fluidized beds. The non-spherical particle was modeled using a superquadric method and shapes can be modeled by only varying five parameters. DPVM-Satellites interpolation scheme was developed to distribute the non-spherical particle volume into the neighboring fluid cells. A general algorithm to calculate the particle projected area perpendicular to the flow was developed. Two hybrid drag models that consider the effects of both particle orientation and cell voidage were implemented and compared. The model was validated by comparing the simulation results with the fluidization experiments of particles of different shapes, including sphere, cylinder, rod, and cuboid. The solver can correctly simulate the pressure drop, particle height distribution, and particle orientation distribution. Finally, large-scale systems with 100 million non-spherical particles were parallel simulated on 6800 cores, which demonstrated the ability of the solver for industrial-relevant flows simulation.

开发了SuperDEM-CFD耦合模型，并在开源MFiX中进行了验证，该模型可用于模拟流化床中非球形颗粒的流化流体动力学。使用超二次方法对非球形粒子进行建模，仅改变五个参数就可以对形状进行建模。开发了DPVM-Satellites插值方案，以将非球形粒子体积分配到相邻的流体单元中。开发了一种计算垂直于流的粒子投影面积的通用算法。实现并比较了两个同时考虑了粒子方向和细胞空隙效应的混合阻力模型。通过将仿真结果与不同形状的颗粒（包括球体，圆柱体，棒状体和长方体）的流化实验进行比较，验证了模型的有效性。求解器可以正确模拟压降，粒子高度分布和粒子方向分布。最后，在6800个核上并行模拟了具有1亿个非球形粒子的大规模系统，这证明了求解器具有与工业相关的流量模拟的能力。