| Two-Dimensional Mathematical Model of Tidal Current and Sediment for Oujiang Estuary and Wenzhou Bay |
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| 作者姓名： | 陆永军 李浩麟 董壮 陆建宇 郝嘉凌 |
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| 作者单位： | River and Harbor Department，Nanjing Hydraulic Research Institute，River and Harbor Department，Nanjing Hydraulic Research Institute，River and Harbor Department，Nanjing Hydraulic Research Institute，River and Harbor Department，Nanjing Hydraulic Research Institute，River and Harbor Department，Nanjing Hydraulic Research Institute Nanjing 210024，China，Nanjing 210024，China，Nanjing 210024，China，Nanjing 210024，China，Nanjing 210024，China |
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| 摘 要： | A 2-D mathematical model of tidal current and sediment has been developed for the Oujiang Estuary and the Wenzhou Bay. This model accomodates complicated features including multiple islands, existence of turbidity, and significant differ-ence in size distribution of bed material. The governing equations for non-uniform suspended load and bed load transport are presented in a boundary-fitted orthogonal curvilinear coordinate system. The numerical solution procedures along with their initial conditions, boundary conditions, and movable boundary technique are presented. Strategies for computation of the critical condition of deposition or erosion, sediment transport capacity, non-uniform bed load discharge, etc. are suggested. The model verification computation shows that, the tidal levels computed from the model are in good agreement with the field data at the 18 tidal gauge stations. The computed velocities and flow directions also agree well with the values measured along the totally 52 synchronously ob
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Two-Dimensional Mathematical Model of Tidal Current and Sediment for Oujiang Estuary and Wenzhou Bay |
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| LU Yongjun LI Haolin,DONG Zhuang
LU Jianyu and HAO Jialing
River and Horbor.Two-Dimensional Mathematical Model of Tidal Current and Sediment for Oujiang Estuary and Wenzhou Bay[J].China Ocean Engineering,2002(1). |
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| Authors: | LU Yongjun LI Haolin DONG Zhuang
LU Jianyu and HAO Jialing
River and Horbor |
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| Institution: | LU Yongjun LI Haolin,DONG Zhuang
LU Jianyu and HAO Jialing
River and Horbor Department,Nanjing Hydraulic Research Imtitute,Nanjing 210024,China |
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| Abstract: | A 2-D mathematical model of tidal current and sediment has been developed for the Oujiang Estuary and the Wenzhou Bay. This model accomodates complicated features including multiple islands, existence of turbidity, and significant differ-ence in size distribution of bed material. The governing equations for non-uniform suspended load and bed load transport are presented in a boundary-fitted orthogonal curvilinear coordinate system. The numerical solution procedures along with their initial conditions, boundary conditions, and movable boundary technique are presented. Strategies for computation of the critical condition of deposition or erosion, sediment transport capacity, non-uniform bed load discharge, etc. are suggested. The model verification computation shows that, the tidal levels computed from the model are in good agreement with the field data at the 18 tidal gauge stations. The computed velocities and flow directions also agree well with the values measured along the totally 52 synchronously observed verticals distributed over 8 cross sections. The coraputed tidal water throughputs through the Huangda'ao cross section are close to the measured data. And the computed values of bed deformation from Yangfushan to the estuary outfall and in the outer-sea area are in good agreement with the data observed from 1986 to 1992. The changes of tidal volumes through the estuary, velocities in different channels and the bed form due to the influence of the reclamation project on the Wenzhou shoal are predicted by means of this model. |
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| Keywords: | mathematical model tidal current non-uniform suspended load non-uniform bed load non-equilibrium transport bed deformation |
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