带阻流板海底管道管跨绕流流场分析

Flow field analysis on subsea pipe span with spoiler

根据流体动力学原理建立了二维平面势流计算模型,利用FLUENT软件分析了阻流板对升力系数、曳力系数、缝隙流体速度、漩涡泄放频率等海底管道管跨绕流流场参数变化规律的影响,以及带阻流板海底管道实现"自埋"的原因。研究结果对于带阻流板海底管道的工程设计具有一定的参考价值。

With the theory of CFD （computational fluid dynamics）, two-dimensional potential flow field model was established. Using FLUENT, the affection of spoiler on the changing law of the external flow parameters, including lift and drag coefficients, flow velocity in the gap and frequency of vortex shedding for pipe, and the mechanism of ＂self-burial＂ were disclosed. The results obtained in this paper can be used as reference on design of subsea pipe with spoiler.