The formation of a filter cake during the filtration of a suspension with non-spherical particles is studied using a multi-sphere model in a simulation that couples the discrete element method with computational fluid dynamics. The implementation of the coupling with a drag model that considers orientation, sphericity, and the presence of surrounding particles for non-spherical particles is tested for single particles and suspensions by comparing the terminal velocities with empirical results. Phenomena predicted in the simulations, such as the presence or absence of initial oscillations and changes in the orientation of a particle, are consistent with experimental observations reported in the literature. The variation in the void fraction of a filter cake with respect to the particle sphericity is obtained and compared with experimental trends reported in the literature. Furthermore, complex interdependencies of the particle sphericity, void fraction, and pressure drop of a filter cake for a wide range of fluid conditions are investigated.

使用多球模型在模拟中研究了非球形颗粒悬浮液过滤过程中滤饼的形成，该模型将离散元方法与计算流体动力学相结合。通过将最终速度与经验结果进行比较，可以对考虑了方向，球形和非球形粒子周围粒子存在的阻力模型的耦合实现进行测试，以测试单个粒子和悬浮液。在模拟中预测的现象，例如是否存在初始振荡以及粒子方向的变化，与文献报道的实验观察结果一致。获得滤饼的空隙率相对于颗粒球形度的变化，并将其与文献中报道的实验趋势进行比较。此外，研究了在广泛的流体条件下颗粒球形度，空隙率和滤饼压降之间的复杂相互依赖性。