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首页> 外文期刊>International Journal of Marine Engineering Innovation and Research >Analysis of the Suppression Device as Vortex Induced Vibration (VIV) Reducer on Free Span using Finite Element Method
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Analysis of the Suppression Device as Vortex Induced Vibration (VIV) Reducer on Free Span using Finite Element Method

机译：有限元法分析自由跨上涡旋减振器的抑制装置

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摘要

Subsea pipeline is a transportation infrastructure of oil and gas as an alternative for ship tanker. The uneven topography surface of the sea floor resulting the pipe undergoes free span. The free span is a condition endured by the pipe where the pipe position has? distance or gap with the seabed supported by two pivot. The free span is at risk of experiencing a vibration caused by the presence of dynamic load that is current and the wave. The vibration that occurs is the impact of the presence of the phenomenon of Vortex Induced Vibration (VIV). The Phenomenon Of VIV occur on a cylindrical component caused by ocean currents, causing the occurrence of vibration by the movement of fluid on the pipe so that it raises the vortex at the rear of the direction of oncoming flow. One way to dampen or reduce the impact of VIV is by adding suppresion device. VIV suppression device is a tool that is installed on the pipeline on offshore piping installationcthat serves to dampen or reduce the impact of VIV. One of the simulations used to know the characteristics of a fluid is to use (CFD) Computational Fluid Dynamic. With the addition of suppression device can add the rest of the operating time on a free span of affected VIV, on the condition of free span critical exposed VIV (Vortex Induced Vibration value) has a life time on plain pipe 44.21 years, on pipe with 53.09 years and Fairing on the pipe with the Helical strike 52.95 year.
机译：海底管道是石油和天然气的运输基础设施，可替代油轮。海底不平坦的地形表面导致管道承受自由跨度。自由跨度是管道所处的位置所承受的条件？与海床的距离或间隙由两个枢轴支撑。自由跨度有遭受由电流和波浪引起的动态负载引起的振动的风险。发生的振动是涡旋振动（VIV）现象的影响。 VIV现象发生在洋流引起的圆柱形部件上，由于流体在管道上的运动而引起振动的发生，因此它在来流方向的后部增加了涡旋。抑制或减少VIV影响的一种方法是添加抑制装置。 VIV抑制装置是安装在海上管道安装系统c上的管道上的工具，用于抑制或减少VIV的影响。用于了解流体特性的模拟之一是使用（CFD）计算流体动力学。通过添加抑制装置，可以在受影响的VIV的自由跨度上增加剩余的运行时间，在自由跨度临界暴露VIV（涡流感应振动值）的条件下，普通管道的使用寿命为44.21年， 53.09年，在螺旋上的整流罩在52.95年。

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