管道运输
海底管道
阻力
海底滑坡
Lift(数据挖掘)
管道(软件)
悬挂(拓扑)
酒窝
地质学
海洋工程
升阻比
岩土工程
山崩
结构工程
工程类
机械
材料科学
航空航天工程
计算机科学
机械工程
物理
同伦
纯数学
冶金
数据挖掘
数学
作者
Xingsen Guo,Tingkai Nian,Thorsten Stoesser
标识
DOI:10.1016/j.oceaneng.2021.110343
摘要
The interaction between submarine landslides and pipelines has attracted widespread attention. For a pipeline designer, generalizing practical analysis models, obtaining accurate dynamic forces (i.e., the drag force and lift force), and proposing effective pipeline protection measures are prerequisites for ensuring their safe operation. In this paper, a computational fluid dynamics approach is employed to investigate if a golfball-type dimpled pipeline surface reduces impact forces induced by submarine landslides. Considering technology suspension, geomorphology suspension, environmental erosion suspension and acquired suspension, numerical models are generalized to allow prescribing different pipeline span heights, and are impacted by fluidized homogeneous submarine landslides. For the given Reynolds numbers and span heights, golfball-type dimpled pipelines experience a reduced peak drag force than standard circular pipelines. In addition, the pipeline dimple suppresses the lift force variation and greatly reduces the force amplitude. As a result, pipeline damage could be lessened or even avoided. Also, a methodology for predicting the drag reduction of dimple-surfaced pipelines under various conditions is provided, and the two necessary conditions for the periodic vibration of the lift force are proposed. Finally, the full life cycle of vortices shed from the pipeline and the hydrodynamics during landslides impact on pipelines are revealed providing the needed insights to prevent future submarine pipeline failures.
科研通智能强力驱动
Strongly Powered by AbleSci AI