| Three-dimensional tidal current numerical model of the Oujiang Estuary |
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| 作者姓名： | LI Mengguo LI Wendan |
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| 作者单位： | Key Laboratory of Engineering Sediment of Ministry of Communications, Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China |
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| 基金项目： | The Natural Science Foundation of Tianjin, China under contract No.08JCZDZT00200 |
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| 摘 要： | The characteristics of three-dimensional (3-D) tidal current in the Oujiang Estuary are investigated according to in situ observations. The Oujiang Estuary has features of irregular coastline, complex topography, many islands, moveable boundary, and submerged dyke, therefore, a 3-D numerical model on an unstructured triangular grid has been developed. The σ coordinate transformation, the moveable boundary and submerged dyke treatment techniques were employed in the model so it is suitable for the tidal simu...
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| 关 键 词： | 数值模型 三维潮流 瓯江口 可移动边界 流动数值模拟 三维数值模拟 淹没处理 三角形网格 |
| 收稿时间： | 2008/2/27 0:00:00 |
| 修稿时间： | 2008/9/16 0:00:00 |
Three-dimensional tidal current numerical model of the Oujiang Estuary |
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| LI Mengguo,LI Wendan.Three-dimensional tidal current numerical model of the Oujiang Estuary[J].Acta Oceanologica Sinica,2009,28(3):17-25. |
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| Authors: | LI Mengguo and LI Wendan |
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| Institution: | Key Laboratory of Engineering Sediment of Ministry of Communications, Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China |
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| Abstract: | The characteristics of three-dimensional (3-D) tidal current in the Oujiang Estuary are investigated according to in situ observations. The Oujiang Estuary has features of irregular coastline, complex topography, many islands, moveable boundary, and submerged dyke, therefore, a 3-D numerical model on an unstructured triangular grid has been developed. The a coordinate transformation, the moveable boundary and submerged dyke treatment techniques were employed in the model so it is suitable for the tidal simulations in the Oujing Estuary with submerged dyke and moveable boundary problems. The model is evaluated with the in situ data, and the results show that the calculated water elevations at 19 stations and currents at 19 profiler stations are in good agreement with measured data both in magnitude and phase. This numerical model is applied to the 3-D tidal circulation simulations of experiments in stopping flow transport through the South Branch of the Oujiang Estuary, and the feasibility to cutoff the flow in the South Branch of the Oujiang Estuary is demonstrated by numerical simulation experiments. The developed numerical model simulated the 3-D tidal current circulations in complicated coastal and estuarine waters very well. |
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| Keywords: | Oujiang Estuary three-dimensional tidal current mathematical model numerical simulation triangular grid a coordinate transformation |
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