Interactions between hydrokinetic turbines and near scale and far scale bed sediment particles are considered a critical area of assessment; however, a limited number of research studies have been published to address this issue. The current paper explores the influence of the blockage ratio on the morphology evolution downstream from a hydrokinetic turbine. A modeling framework is derived to predict the significant transport induced by a turbine installed on the erodible fluvial sandy bed surface, such as the Eulerian multi-phase model for the sediment and the Blade Element Momentum Theory (BEMT) for the turbine, using the open source platform OpenFOAM. Two configurations of different blockage ratios are considered. The configurations show differences in the bed morphology and the sediment transport. It has been shown for both configurations that the scour capabilities are enhanced below the turbine due to the acceleration of the flow and increasing local shear stress on the sediment.

流体动力涡轮机与近尺度和远尺度床沉积物颗粒之间的相互作用被认为是一个关键的评估领域；然而，已经发表了数量有限的研究来解决这个问题。本论文探讨了堵塞比对水力涡轮机下游形态演变的影响。推导出了一个建模框架来预测安装在可侵蚀河流沙床表面的涡轮机引起的显着传输，例如沉积物的欧拉多相模型和涡轮机的叶片元素动量理论 (BEMT)，使用开放式源平台 OpenFOAM。考虑了不同阻塞率的两种配置。这些配置显示了床形态和沉积物输送的差异。