| 2-D NUMERICAL SIMULATION OF CRUSH BEDROCK RIVER |
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| 作者姓名： | YINZe-gao ZHANGTu-qiao SUNDong-po LIGuo-qing |
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| 作者单位： | [1]DepartmentofCivilEngineering,ZhejiangUniversity,Hangzhou310027,China [2]DepartmentofWaterConservancyEngineering,NorthChinaInstituteofWaterConservancyandHydroelectricPower,Zhengzhou450008,China |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina (GrantNo :5 0 0 780 4 8) |
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| 摘 要： | In this paper, the erosion-resisting coefficient was introduced to compute bed deformation in a crush bedrock river. In the case of crush bedrock, there has been no proper control equation to describe bed stability, which leads to difficulty in calculation of the bed deformation with conventional methods. The data from field survey were used to give the erosion-resisting capability with an appropriate coefficient. After the determination of longitudinal distribution expressed by polynomial regression and transversal distribution expressed by normal distribution function, the plane distribution of erosion-resisting coefficient in a crush bedrock river was obtained. With the computational results from a 2-D horizontal flow mathematical model, the erosion-resisting coefficient and controlling condition of local stability were employed to compute the values of bed deformation when riverbed is stable.The above method was applied in a case study, and the computational results of flow and bed deformations are in good agreement with physical model test data.
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| 关 键 词： | 数值模拟 二维水平流数学模型 腐蚀-阻抗系数 冲压岩石河床 |
2-D NUMERICAL SIMULATION OF CRUSH BEDROCK RIVER |
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| YINZe-gao ZHANGTu-qiao SUNDong-po LIGuo-qing.2-D NUMERICAL SIMULATION OF CRUSH BEDROCK RIVER[J].Journal of Hydrodynamics,2004,16(4):449-454. |
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| Authors: | YIN Ze-gao ZHANG Tu-qiao |
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| Affiliation: | YIN Ze-gao,ZHANG Tu-qiao Department of Civil Engineering,Zhejiang University,Hangzhou 310027,China,SUN Dong-po,LI Guo-qing Department of Water Conservancy Engineering,North China Institute of Water Conservancy and Hydroelectric Power,Zhengzhou 450008,China |
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| Abstract: | In this paper, the erosion-resisting coefficient was introduced to compute bed deformation in a crush bedrock river. In the case of crush bedrock, there has been no proper control equation to describe bed stability, which leads to difficulty in calculation of the bed deformation with conventional methods. The data from field survey were used to give the erosion-resisting capability with an appropriate coefficient. After the determination of longitudinal distribution expressed by polynomial regression and transversal distribution expressed by normal distribution function, the plane distribution of erosion-resisting coefficient in a crush bedrock river was obtained. With the computational results from a 2-D horizontal flow mathematical model, the erosion-resisting coefficient and controlling condition of local stability were employed to compute the values of bed deformation when riverbed is stable. The above method was applied in a case study, and the computational results of flow and bed deformations are in good agreement with physical model test data. |
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| Keywords: | numerical simulation 2-D Horizontal Flow Mathematical Model(HFMM) Erosion-Resisting Coefficient(ERC) bed deformation crush bedrock river |
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