摘要
波状圆柱是一种新型涡激抑制装置,对海流方向不敏感,可应用在海流变化频繁的海洋环境中。为研究其在海流中的涡激抑制性能,基于流体动力学方法,利用Fluent软件对波状圆柱进行三维绕流流场分析和流场参数计算,对比分析钝体隔水管,明确表面结构对波状圆柱减振功效的影响,提出波状圆柱在海洋环境中涡激抑制方面的优势。结果表明,波状圆柱具有稳定的涡激抑制性能,横向升力显著减小,轴向曳力虽有增加,但幅度较小,有望应用于深水隔水管的涡激抑制。
As a new Vortex induced vibration (VIV) suppression device, sinuous cylinder can be applied to the marine environment of frequent changes for its insensitivity to current directions. To study the VIV suppression performance of sinuous cylinder, the triaxial flow field is analyzed and parameters of sinuous vibration absorber are worked out using FLUENT software based on CFD theory. In comparison with the riser, the way how the surface feature affects the vibration absorbing is determined, with its advantages proposed. Results show that, with the stable suppression performance of the sinuous cylinder, it will weaken transverse lift force, and also will not increase drag force significantly, which is expected to be applied to the VIV suppression of the deepwater riser.
出处
《石油机械》
北大核心
2009年第3期35-37,共3页
China Petroleum Machinery
基金
国家863高技术研究发展计划课题"深水钻井隔水管与井口技术"(2006AA09A106)
关键词
波状圆柱
隔水管
涡激抑制
流场参数
表面结构
Sinuous cylinder, marine riser, VIV suppression, flow field parameter, surface feature
