In this paper the influence of the inlet and outlet configurations of a pseudo-2D fluidized riser on the hydrodynamics (i.e. flow pattern and cluster characteristics) are studied. A detailed comparison between experimental data and full 3D CFD-DEM simulation results is performed. Solids volume fraction and mass flux are characterized and particle clusters are detected in our CFD-DEM simulations and compared to experimental data. It is shown that a correct representation of the outlet is very important for a correct simulation of the solids holdup in the top section of the riser. The core-annulus flow behavior is generally well predicted by the model and cluster characteristics such as cluster occurance and velocity are also in good agreement with experimental data. Finally, an outlook is given for the future use of CFD-DEM simulation approaches to study riser flows.

在本文中，研究了伪二维流化立管的入口和出口配置对流体动力学（即流动模式和集群特性）的影响。对实验数据和全 3D CFD-DEM 模拟结果进行了详细比较。在我们的 CFD-DEM 模拟中对固体体积分数和质量通量进行表征，并检测到粒子簇，并与实验数据进行比较。结果表明，出口的正确表示对于正确模拟提升管顶部的固体滞留量非常重要。该模型通常可以很好地预测岩心-环空流动行为，并且簇出现和速度等簇特征也与实验数据非常吻合。最后，