| 南海海底管道冲刷深度预测（英文） |
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| 作者姓名： | 曹永港 白玉川 王俊勤 廖世智 许栋 |
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| 作者单位： | State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University;South China Sea Marine Engineering Surveying Center,State Oceanic Administration;China National Offshore Oil Corporation General Research Institute |
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| 基金项目： | Supported by the State Key Laboratory of Hydraulic Engineering Simulation and Safety(Grant No.HESS-1401);the National Natural Science Foundation of China(Grant No.51279124);the Marine Science and Technology Foundation of South China Sea Branch,State Oceanic Administration(Grant No.1417);the National High Technology Research and Development Program of China(Grant No.2008AA09A401) |
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| 摘 要： | Scour depth prediction of offshore pipelines is of great significance to the design and construction of the submarine pipeline projects. In this paper, based on the CFD software package FLUENT and User Defined Function(UDF), an Eulerian two-phase model, which includes an Euler-Euler coupled model for water and sediment phases, and a turbulent model for the fluid phase, is adopted to predict the scour depth around pipelines. The model is verified by observation data obtained from laboratory experiments. On the basis of the simulations, the factors affecting the scour depth, including the effects of incipient velocity, pipe diameter and sediment particle size and so on, were investigated. Meanwhile, according to formulas of incipient velocity of various sediments, approximate calculation on theoretical scour depths is developed for pipelines of seven stations in the South China Sea, where engineering application information is available.
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| 关 键 词： | pipeline offshore pipelines sediment scour depth numerical simulation theoretical calculation South China Sea |
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