泥沙研究2017，Vol.42Issue(3)：36-41,6.DOI:10.16239/j.cnki.0468-155x.2017.03.007
往复流作用下海底管线冲刷模拟研究
Numerical study on scour around offshore pipeline in reciprocating tidal flow
摘要
Abstract
Suspension of offshore pipeline due to seabed scour is the main factor which induces the vortex vibration of pipeline.In order to elevate the scour characteristics of offshore pipeline,the scour below offshore pipeline on muddy bed in reciprocating tidal flow was studied by a coupled numerical model,Flow-3D,which includes the hydrodynamics and sediment transport model.The standard k-ε equations were used to close the N-S equations and the governing equations were discretized by finite difference method.The numerical results show that the scour profile is nearly symmetry under reversal tidal flow.The position of maximum scour depth fluctuates during the scouring process.Besides,the maximum scour depth under reversal tidal flow is smaller than the value under steady current by 20％.关键词
往复流/海底管线/冲刷/耦合模拟Key words
reversal tidal flow/offshore pipeline/scour/coupled simulation分类
海洋科学引用本文复制引用
许文兵,王法承,贾宏伟,杨元平..往复流作用下海底管线冲刷模拟研究[J].泥沙研究,2017,42(3):36-41,6.基金项目
东海长输油气管道近岸段状态分析及拟建管道近岸段路由评估 （）
国家自然科学基金项目(41376099,51379190,51609214) （41376099,51379190,51609214）
浙江省公益性计划研究项目(2016C33095) （2016C33095）
浙江省科技厅重点研发计划项目(2015C03003) （2015C03003）
