| Simulation of three-dimensional cohesive sediment transport in Hangzhou Bay, China |
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| 作者姓名： | DU Panjun DING Pingxing HU Kelin |
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| 作者单位： | DU Panjun(State Key of Estuarine and Coastal Research,East China Normal University,Shanghai 200062,China;Forecast Centers for East China Sea,State Oceanic Administration,Shanghai 200062,China);DING Pingxing,HU Kelin(State Key of Estuarine and Coastal Research,East China Normal University,Shanghai 200062,China) |
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| 基金项目： | the Funds for Creative Research Groups of China under contract No. 40721004 and the Sino-Dutch Program for
Strategic Scientific Alliance Project under contract No. 2008DFB90240. |
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| 摘 要： | Sediment transport in the Hangzhou Bay is extremely complicated due to its bathymetry and hydrodynamic conditions. The ECOMSED model is employed to simulate three-dimensional (3-D) cohesive sediment transport in Hangzhou Bay. Dynamical factors such as Coriolis force, tides, salinity, river discharges, and waves are considered in the model. The wave parameters, including the significant wave height, period, and direction, are calculated with the SWAN model. The Grant-Madsen model is introduced for the bed shear stress due to the combined effect of waves and currents. The formulation of bed shear stress used to calculate the sink/source terms is modified based on previous research that sufficiently validated the formulation with measurement data. The integrated model of the above-mentioned models is applied to simulate sediment transport in Hangzhou Bay. The results of the simulation agree well with field observations concerning the distribution of suspended sediment, indicating that the sediments are remarkably suspended in Hangzhou Bay under the action of waves and currents.
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| 关 键 词： | 杭州湾 凝聚力 模拟 三维 ECOMSED模式 计算模型 泥沙分布 输沙 |
| 收稿时间： | 15 November 2009 |
| 修稿时间： | 4/7/2009 12:00:00 AM |
Simulation of three-dimensional cohesive sediment transport in Hangzhou Bay, China |
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| DU Panjun,DING Pingxing,HU Kelin.Simulation of three-dimensional cohesive sediment transport in Hangzhou Bay, China[J].Acta Oceanologica Sinica,2010,29(2):98-106. |
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| Authors: | DU Panjun DING Pingxing and HU Kelin |
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| Institution: | 1.State Key of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;Forecast Centers for East China Sea, State Oceanic Administration, Shanghai 200062, China2.State Key of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China |
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| Abstract: | Sediment transport in the Hangzhou Bay is extremely complicated due to its bathymetry and hy-
drodynamic conditions. The ECOMSED model is employed to simulate three-dimensional (3-D)
cohesive sediment transport in Hangzhou Bay. Dynamical factors such as Coriolis force, tides,
salinity, river discharges, and waves are considered in the model. The wave parameters, includ-
ing the significant wave height, period, and direction, are calculated with the SWAN model. The
Grant-Madsen model is introduced for the bed shear stress due to the combined effect of waves
and currents. The formulation of bed shear stress used to calculate the sink/source terms is modi-
fied based on previous research that sufficiently validated the formulation with measurement data.
The integrated model of the above-mentioned models is applied to simulate sediment transport
in Hangzhou Bay. The results of the simulation agree well with field observations concerning the
distribution of suspended sediment, indicating that the sediments are remarkably suspended in
Hangzhou Bay under the action of waves and currents. |
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| Keywords: | waves currents suspended sediment deposition erosion Grant-Madsen Model |
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