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Experimental Study of Wave Run-Up on Tripod Offshore Wind-Turbine Foundations
| 题名： | Experimental Study of Wave Run-Up on Tripod Offshore Wind-Turbine Foundations |
| 正文语种： | eng |
| 作者： | W. Li;B. H. Li;X. Y. Zheng;W. D. Rong |
| 作者单位： | Key Laboratory of Far-shore Wind Power Technology of Zhejiang Province Hangzhou 310014 China;China Shanghai Merchant Ship Design & Research Institute Shanghai 201203 China School of Naval Architecture Dalian Univ. of Technology Dalian 116024 China;Division of Ocean Science and Technology Tsinghua Shenzhen International Graduate School Shenzhen 518055 China Institute for Ocean Engineering Tsinghua Univ. Beijing China;Envision Energy Co. Ltd 1065 West Zhongshan Rd. Shanghai 200051 China School of Naval Architecture Dalian Univ. of Technology Dalian 116024 China |
| 关键词： | Tripod foundation; Wave run-up; Run-up coefficient; Velocity stagnation head theory; Laboratory experiments |
| 摘要： | For the design of offshore wind turbines, the airgap height of a service platform above still water level (SWL) is dependent on the maximum level of wave run-up in seas. A number of laboratory model tests were carried out in a wave flume to evaluate and predict the wave run-up on a tripod foundation in regular and irregular waves. Comparison of the measured data with the predictions by existing methods revealed that the empirical formulae for wave run-up on monopile foundations cannot straightforwardly be applied to the tripod foundation for the sake of more complex structural geometry and associated hydrodynamics. Hence, the run-up coefficients m for measured regular and irregular wave run-ups are derived with the velocity stagnation head theory and then fitted against wave steepness. The hindcast results using the fitted m show good agreement with measurement, thus enabling fast prediction of wave run-ups on tripod foundations in practice. In addition, an exceptionally large wave-up has been recorded in the irregular wave tests, which affirms the occurrence of a similar phenomenon in Horns Reef 1 wind farm some years ago. |
| 出版年： | 2021 |
| 期刊名称： | Journal of Waterway, Port, Coastal, and Ocean Engineering |
| 卷： | 147 |
| 期： | 2 |
| 页码： | 04020052.1-04020052.12 |
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