| 潮流作用下河口是沙运动二维数学模型 |
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| 引用本文： | 李瑞杰,孙效功.潮流作用下河口是沙运动二维数学模型[J].海洋湖沼通报,1999(3). |
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| 作者姓名： | 李瑞杰 孙效功 |
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| 作者单位： | 青岛海洋大学!青岛市，266003，青岛海洋大学!青岛市，266003 |
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| 摘 要： | 对于粉沙淤泥质河口和海岸，海底泥沙受潮流作用主要以悬沙形式输运。在这样的海区建港与疏浚航道，需要首先进行泥沙淤积问题的研究。本文采用潮流作用下不平衡方程式、挟沙能力公式和起动流速公式，建立了潮流作用下河口悬沙运动二维数学模型，在对二维悬沙不平衡输沙方程和海底变形方程进行离散时直接采用显式迎风格式，得到了较好的结果。在此基础上，将该模型应用于实际水域，结果表明，该数学模型能够模拟河口的悬沙运动规律和冲淤变化，对于水流较大的海域该模型有一定的应用价值
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| 关 键 词： | 河口悬沙 不平衡输沙方程 海底冲淤 潮流 技沙能力 |
A 2-D MATHEMATICAL MODEL OF ESTUARY SUSPENDED SEDIMENT TRANSPORT ACTED BY TIDAL CURRENTS |
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| LI Rui- jie ,and SUN Xiao-gong.A 2-D MATHEMATICAL MODEL OF ESTUARY SUSPENDED SEDIMENT TRANSPORT ACTED BY TIDAL CURRENTS[J].Transaction of Oceanology and Limnology,1999(3). |
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| Authors: | LI Rui- jie and SUN Xiao-gong |
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| Institution: | (Ocean University of Qingdao,Qingdao,266003)LI Rui- jie ,and SUN Xiao-gong |
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| Abstract: | For fine s and and silt estuaries and coastal regions the sediment particles 0nthe sea bottom are easily suspended by the action of tidal currents and transportmainly as suspended sand. When building harbors and dredging nayigation channelsin such areas, it is necessary to study the sediment problem. The non-equilibriumsediment transport equation, transport capacity formula and initial velocity formulaof tidal current are used in this paper. To simulate two dimensional non-equilibriumtransport equation and seabed deformation equation of suspended sediment, anupstream scheme is used in this model. On this basis, a 2-D suspended model isestabIished and applied to a field estuary. The computation results show that themodel can we1l simulate the regulation of suspended sediment transport and seabeddeformation, and can be used to a real sea area with bigger tidal currents- |
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| Keywords: | estuary suspended sand non-equilibrium sediment transport equation seabed erosion and accretion tidal current sediment transport capacity |
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