| A Computational Model for Velocity Separation in Shallow Sea |
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| 引用本文： | SONG,Zhiyao(宋志尧),YAN,Yixin(严以新),SHEN,Hongyan(沈红艳),KONG,Jun(孔俊). A Computational Model for Velocity Separation in Shallow Sea[J]. 中国海洋工程, 2002, 16(3): 407-413 |
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| 作者姓名： | SONG Zhiyao(宋志尧) YAN Yixin(严以新) SHEN Hongyan(沈红艳) KONG Jun(孔俊) |
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| 作者单位： | Research Institute of Coastal and Ocean Engineering，Hohai University，Nanjing 210098，China，Research Institute of Coastal and Ocean Engineering，Hohai University，Nanjing 210098，China，Research Institute of Coastal and Ocean Engineering，Hohai University，Nanjing 210098，China，Research Institute of Coastal and Ocean Engineering，Hohai University，Nanjing 210098，China |
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| 摘 要： | Based on the hydrodynamical feature and the theoretical velocity profiles of tidal flow and vvind-induced flow in shal-low sea, a computational model is established for the first time, which can separate observed velocity into tidal velocity and wind-induced velocity by use of the least square method. With the model, not only the surface velocities of tidal flow and vvind-induced flow are obtained, but also the bed roughness height is determined and the wind velocity above the wa-ter surface is estimated. For verification of the model, the observed velocity in the Yellow River Estuary and the laborato-ry test is separated, then it is applied to the Yangtze River Estuary. All the results are satisfactory. The research results show that the model is simple in method, feasible in process and reasonable in result. The model is a valid approach to analysis and computation of field dala, and can be applied to separate the observed velocity in shallow sea; at the same time, reasonable boundary conditions of th
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A Computational Model for Velocity Separation in Shallow Sea |
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| SONG Zhiyao YAN YixinSHEN Hongyan and KONG JunResearch Institute of Coastal and Ocean Engineering,Hohai University,Nanjing ,China. A Computational Model for Velocity Separation in Shallow Sea[J]. China Ocean Engineering, 2002, 16(3): 407-413 |
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| Authors: | SONG Zhiyao YAN YixinSHEN Hongyan KONG JunResearch Institute of Coastal Ocean Engineering Hohai University Nanjing China |
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| Affiliation: | Research Institute of Coastal and Ocean Engineering, Hohoi University, Nanjing 210098, China Research Institute of Coastal and Ocean Engineering, Hohoi University, Nanjing 210098, China Research Institute of Coastal and Ocean Engineering, Hohoi University, Nanjing 210098, China Research Institute of Coastal and Ocean Engineering, Hohoi University, Nanjing 210098, China |
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| Abstract: | Based on the hydrodynamical feature and the theoretical velocity profiles of tidal flow and vvind-induced flow in shal-low sea, a computational model is established for the first time, which can separate observed velocity into tidal velocity and wind-induced velocity by use of the least square method. With the model, not only the surface velocities of tidal flow and vvind-induced flow are obtained, but also the bed roughness height is determined and the wind velocity above the wa-ter surface is estimated. For verification of the model, the observed velocity in the Yellow River Estuary and the laborato-ry test is separated, then it is applied to the Yangtze River Estuary. All the results are satisfactory. The research results show that the model is simple in method, feasible in process and reasonable in result. The model is a valid approach to analysis and computation of field dala, and can be applied to separate the observed velocity in shallow sea; at the same time, reasonable boundary conditions of the surface and bottom can be obtained for two-and three-dimensional numerical simulation. |
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| Keywords: | shallow sea velocity profile tidal flow wind-induced flow the least square method velocity separation |
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