Vertical 2-d mathematical model of sediment silting in dredged channel
Channel excavation is an important project measure in channel dredging, which is widely applied in channel regulations. Since channel excavation changes the original channels bed morphology, the pattern of flow becomes more complicated and the relative balance between water flow and sediment is broken. The paper constructed a vertical 2-D numerical model of excavated channel focusing on the sediment deposition and flow distribution, which takes the hydrodynamic pressure into account and adopts auto-mesh technique. The model can effectively reduce the error caused by calculating meshes not completely matching with the calculating region. By introducing the hydrodynamic pressure, the mode can overcome the difficulty in modeling the severely changing velocity caused by the channel excavation. To verify the reliability of the model, Alfrins experimental datum is adopted in the paper, and the calculating results agree well with the experimental datum.
dredged channel vertical 2-D mathematical model hydrodynamic pressure
Teng Wu Xiu-xia Li
College of Harbor,Coastal and Offshore Engineering,Hohai University,Nanjing,China Nanjing Institute of Environmental Sciences,Ministry of Environmental Protection,Nanjing,China
国际会议
9th International Conference on Hydrodynamics(第九届国际水动力学会议 ICHD2010)
上海
英文
625-629
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）