海洋工程装备与技术 ›› 2015, Vol. 2 ›› Issue (1): 45-49.

• 海洋工程装备制造材料与设计技术 • 上一篇    下一篇

基于FLUENT的海底结构冲刷启动评估法在印尼海底管道工程中的应用

周子鹏, 钟文军, 周美珍, 孙国民, 王乐芹, 胡春红   

  1. 海洋石油工程股份有限公司,天津 300451
  • 收稿日期:2015-01-15 出版日期:2015-02-20 发布日期:2016-03-31
  • 作者简介:

    作者简介:周子鹏(1983--),男,硕士,工程师,主要从事海底管道工程设计方面的研究.

Application of Subsea Structure Scouring Incipient Assessment Based on FLUENT in Indonesia Subsea Pipeline Project

Zi-peng ZHOU, Wen-jun ZHONG, Mei-zhen ZHOU, Guo-min SUN, Le-qin WANG, Chun-hong HU   

  1. Offshore Oil Engineering Co., Ltd., Tianjin 300451, China
  • Received:2015-01-15 Online:2015-02-20 Published:2016-03-31

摘要:

针对由于海底管道支撑结构底部被冲刷掏空而导致的海底管道失效等问题,研究了海底结构物冲刷原理,以冲刷理论分析为基础获得了海床冲刷启动流速.采用FLUENT有限元软件建立海管支撑结构及周围海域的二维紊流模型,真实地模拟了海床上增加支撑结构后的海流变化趋势,获得了增加海底结构物后的海床表面流速,通过与海床冲刷启动流速比对来评估冲刷情况.该评估法在印尼爪哇海域海底管道工程成功应用,是一种实用可靠的冲刷启动评估方法,对国内外海域海底结构的冲刷启动评估工作有借鉴意义.

关键词: 海底管道, FLUENT软件, 海底支撑结构, 冲刷启动, 冲刷评估, 数值模拟

Abstract:

Many subsea pipelines have been failed during their service period caused by scouring of pipeline support structure. When a submarine pipeline or submarine structure is laid on a sediment bed, and is subject to a current, the pressure difference between the upstream and the downstream of the pipeline or the structure may induce a scour underneath the pipe and submarine structure. According to this problem, the subsea pipeline support structure scouring assessment is studied to forecast the scouring occurrence. Firstly, the sediment incipient velocity is calculated based on scouring theoretical analysis, and then a two-dimensional geometry model is built in FLUENT software, and the actual seabed current velocity is obtained based on numerical simulation by FLUENT software. Through the comparison between these two velocities, the scouring occurrence could be assessed. This method is validated in Indonesia subsea pipeline project.

Key words: subsea pipeline, FLUENT software, subsea support structure, scouring incipience, scouring assessment, numerical simulation

中图分类号: