| 海底管道周围局部冲刷数值模拟分析 |
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| 引用本文： | 孙建伟,耿红,孙昭晨.海底管道周围局部冲刷数值模拟分析[J].海洋技术,2010,29(1). |
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| 作者姓名： | 孙建伟 耿红 孙昭晨 |
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| 作者单位： | 1. 交通运输部科学研究院,北京,100029
2. 大连理工大学海岸及近海工程国家重点实验室,辽宁,大连,116023 |
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| 摘 要： | 通过建立一个垂直二维紊流模型来模拟管道周围流场,建立泥沙冲刷模型来模拟海床底面变化。其中,冲刷模型同时包括悬移质输沙和推移质输沙。海床底面变化通过计算底面泥沙总输运平衡关系得到。并进行多组冲刷数值实验,分析泥沙冲刷过程,总结出一套冲刷平衡深度经验公式。
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| 关 键 词： | 数值模拟 管道 泥沙输运 冲刷深度 |
Numerical Model For Local Scour Around Offshore Pipelines |
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| SUN Jian-wei,GENG Hong,SUN Zhao-chen.Numerical Model For Local Scour Around Offshore Pipelines[J].Ocean Technology,2010,29(1). |
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| Authors: | SUN Jian-wei GENG Hong SUN Zhao-chen |
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| Institution: | 1.China Academy of Transportation Sciences;Beijing 100029;China;2.State Key Lab of Coastal and Offshore Engineering;Dalian University of Technology;Dalian Liaoning 116024;China |
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| Abstract: | A vertical two-dimensional flow model is developed to model the current around pipeline.A scour model is developed to model the change of bed level.Both suspended load and bed load are considered in the model.The change of bed level is calculated from the continuity equation of total sediment transport.Groups of scour experiment were took and the process of scour was analyzed.Finally,a empirical formula about scour deep was concluded. |
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| Keywords: | numerical model pileline sediment transport scour deep |
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