中文摘要：

对二沉池研究中常用的计算流体力学（CFD）数学模型进行了分类和归纳，介绍了数学模型的数值解法，讨论了水流模型中的动量源项和悬浮物模型中的传质源项，并分析了二沉池内水流运动、悬浮物传质过程的主要研究成果。总结了应用CFD优化二沉池结构、进口条件及效率的研究进展，提出了今后的研究方向。

英文摘要：

The mathematical models of Computational Fluid Dynamics （CFD） commonly used in the study on secondary sedimentation tank were classified and summed up, and the numerical solution was presented. The momentum source in water flow model and mass transfer source in suspended matter model were discussed. The main study results of water flow movement and mass transfer of suspended matter in the secondary sedimentation tank were analyzed. The study progress on the structure, inlet conditions and efficiency of the secondary sedimentation tank optimized by using CFD was summarized, and the further research direction on this topic was suggested.