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| RATIONAL BASIS FOR SUSPENDED SEDIMENT MODELING | |
| 作者姓名： | Jianjun ZHOU Biniiang LIN and Bingnan LIN Prof Dept. of Hydraulic Eng. Tsinghua University Beijing P.R. China Senior Lecturer School of Eng. Cardiff University Queen's Buildings P.O.Box Cardiff CF EW UK Dir. Emeritus China Inst. of Water Resources and Hydropower Res. Formerly Chief of Sedimentation Panel for TGP Chairman Emeritus of Advising Council IRTCES P.O. Box. Beijing P.R. China |
| 作者单位： | Jianjun ZHOU，Biniiang LIN and Bingnan LIN Prof，Dept. of Hydraulic Eng.，Tsinghua University，Beijing 100084，P.R. China; Senior Lecturer，School of Eng.，Cardiff University，Queen's Buildings，P.O.Box 686，Cardiff，CF14 9EW，UK; Dir. Emeritus，China Inst. of Water Resources and Hydropower Res.; Formerly，Chief of Sedimentation Panel for TGP; Chairman Emeritus of Advising Council，IRTCES，P.O. Box. 366，Beijing 100044，P.R. China; |
| 摘 要： | This paper presents a rational basis to model the transport of suspended sediment. The loose-boundary condition for 3D models and the adjustment coefficients for both the depth-integrated 2D and laterally integrated 1D models are treated comprehensively. A combination of Dirichlet and Neumann conditions is proposed as the loose-boundary condition. The adjustment coefficient for 2D models is obtained on the basis of the proposed boundary condition and analytical solutions developed for some simple cases of non-equilibrium transport of sediment in uniform flows. The adjustment coefficient for 1D models for natural rivers is further obtained from lateral integration. Comparisons with analytical solutions and a considerable amount of laboratory and prototype data show that mathematical models developed along the proposed line of attack would well simulate the transport of suspended sediment in practical problems. |
RATIONAL BASIS FOR SUSPENDED SEDIMENT MODELING |
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| Jianjun ZHOU,Biniiang LIN and Bingnan LIN Prof,Dept. of Hydraulic Eng.,Tsinghua University,Beijing ,P.R. China, Senior Lecturer,School of Eng.,Cardiff University,Queen''''s Buildings,P.O.Box ,Cardiff,CF EW,UK, Dir. Emeritus,China Inst. of Water Resources and Hydropower Res., Formerly,Chief of Sedimentation Panel for TGP, Chairman Emeritus of Advising Council,IRTCES,P.O. Box. ,Beijing ,P.R. China,.RATIONAL BASIS FOR SUSPENDED SEDIMENT MODELING[J].International Journal of Sediment Research,2003,18(3). | |
| Authors: | Jianjun Zhou Binliang LIN Bingnan LIN |
| Abstract: | This paper presents a rational basis to model the transport of suspended sediment. The loose-boundary condition for 3D models and the adjustment coefficients for both the depth-integrated 2D and laterally integrated 1D models are treated comprehensively. A combination of Dirichlet and Neumann conditions is proposed as the loose-boundary condition. The adjustment coefficient for 2D models is obtained on the basis of the proposed boundary condition and analytical solutions developed for some simple cases of non-equilibrium transport of sediment in uniform flows. The adjustment coefficient for 1D models for natural rivers is further obtained from lateral integration. Comparisons with analytical solutions and a considerable amount of laboratory and prototype data show that mathematical models developed along the proposed line of attack would well simulate the transport of suspended sediment in practical problems. |
| Keywords: | Unsteady sediment-laden flow Suspended sediment Boundary condition Basic equations Verification |
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