| LOCAL SCOUR AROUND A LARGE-SCALE VERTICAL CIRCULAR CYLINDER DUE TO COMBINED WAVE-CURRENT ACTION |
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| 作者姓名： | ZHAOMing TENGBin LILin-pu |
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| 作者单位： | StateKeyLaboratoryofCoastalandOffshoreEngineering,DalianUniversityofTechnology,Dalian116024,China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina(GrantNos:5 0 0 2 5 92 4and 5 99790 0 3)andChinaPost doctoralScienceFoundation .(GrantNo :2 0 0 30 3336 8) |
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| 摘 要： | The local scour around a large scale vertical circular cylinder due to combined wave-current action was experimentally and numerically studied in the present paper. Experiments were carried out to research the affect of the wave height, current velocity and the diameter of the cylinder on the scour process. The topography near the cylinder in various cases during scour was measured. The cylinder diameter affects the distribution of scour and deposition area. The maximum scour depth increases evidently when the current velocity increases, The maximum scour depth does not increase after the wave height retains a certain value. A numerical model using a finite element method for simulating the scour process was established. And the numerical results agree well with the measured data. The numerical model is more applicable in the case of large-scale cylinders.
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| 关 键 词： | 局域冲蚀 循环汽缸 数值模拟 海岸工程 波动 流动 沉积物传输 |
LOCAL SCOUR AROUND A LARGE-SCALE VERTICAL CIRCULAR CYLINDER DUE TO COMBINED WAVE-CURRENT ACTION |
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| ZHAOMing TENGBin LILin-pu.LOCAL SCOUR AROUND A LARGE-SCALE VERTICAL CIRCULAR CYLINDER DUE TO COMBINED WAVE-CURRENT ACTION[J].Journal of Hydrodynamics,2004,16(1):7-16. |
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| Authors: | ZHAO Ming TENG Bin LI Lin-pu State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian China |
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| Affiliation: | ZHAO Ming,TENG Bin,LI Lin-pu State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China |
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| Abstract: | The local scour around a large -scale vertical circular cylinder due to combined wave-current action was experimentally and numerically studied in the present paper. Experiments were carried out to research the affect of the wave height, current velocity and the diameter of the cylinder on the scour process. The topography near the cylinder in various cases during scour was measured. The cylinder diameter affects the distribution of scour and deposition area. The maximum scour depth increases evidently when the current velocity increases. The maximum scour depth does not increase after the wave height retains a certain value. A numerical model using a finite element method for simulating the scour process was established. And the numerical results agree well with the measured data. The numerical model is more applicable in the case of large-scale cylinders. |
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| Keywords: | local scour wave current sediment transport circular cylinder |
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