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论文类型：期刊论文

发表时间：2013-05-01

发表刊物：WATER RESOURCES MANAGEMENT

收录刊物：SCIE、EI、Scopus

卷号：27

期号：7

页面范围：2053-2069

ISSN号：0920-4741

关键字：Combined Sewer Overflow (CSO); Computational Fluid Dynamics (CFD); Flow characteristics; Particle tracking; Water quality; 3D numerical model

摘要：The design of the urban sewage system is site specific, and it makes the use of three-dimensional (3D) model an alternative to a field study or a laboratory experiment. However, the use of 3D computational fluid dynamics (CFD) in the study of the urban sewage system has been generally limited to the study of a single structural component with simplified assumptions. In this study, the 3D model that adopted the renormalized group (RNG) k-epsilon turbulence model, the volume of fluid (VOF) free water surface model and the particle tracking approach was verified comparing the predicted flow field data with the measurements in laboratory scale experiments. Then, the model was applied to optimize the design of the combined sewer system (CSS) in the city of Edmonton with multiple hydraulic structures. Considering the details of predicted flow characteristics and the behaviors of the suspended solids, the final design was chosen and implemented to reduce the water pollution induced by the direct combined sewer overflow (CSO) discharge to the receiving water body. It is shown that the proposed 3D CFD modeling approach is a cost-effective tool to design the municipal sewer system.