【作者】 李振林； 东朝莉； 袁亚雷； 董守平；

【Author】 LIzhenlin DONGZhaoli YUANYalei DONG Shouping (University of Petroleum (Beijing), 102200,China)

【机构】 石油大学；

【摘要】 随着海洋石油工业的发展,海底管道的安全运行成为愈来愈受关注的问题。本文针对胜利埕岛油田海底管道的掏空情况,采用流动显示技术研究海底管道由部分裸露到完全掏空过程中管道周围的流场特征。试验结果表明,海底管道从裸露到掏空,冲刷由缓慢变得急剧,直至掏空达一定程度后冲刷达到平衡;海流绕流管道时存在一涡脱落的相关长度,该约长度约为2～3d。更多还原

【Abstract】 The safely running of submarine pipelines are paid more attention with the ocean petroleum industry developing. In this paper, the flow characteristics around a submarine pipeline is studied from the pipe exposing partly to it scours fully by .flow visualizing according to the scouring status of the submarine pipelines in the shengli oil field. The experiment results show that the scouring of sand around a pipeline exposing partly is much more fiercely than that of the pipeline which is fully scouring, but the scouring reaches dynamic balance when the scouring gets some degree; In addition we observe that the correlation length of vortex shedding is about two to three times of the pipeline diameter.更多还原