A new method for strake configuration design of Steel Catenary Risers
A new method for strake configuration design of Steel Catenary Risers
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DOI：
10.1080/17445302.2014.999479
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发表时间：
2016-05
影响因子：
2.1
通讯作者：
K. Park;Y.T. Kim;D.K. Kim;S. Yu;H. Choi
中科院分区：
文献类型：
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作者：
K. Park;Y.T. Kim;D.K. Kim;S. Yu;H. Choi
涡激振动对隔水管的疲劳性能有着重要的影响，近十年来国内外学者对涡激振动进行了大量的理论和实验研究。然而，目前对整流罩、边条等涡激振动抑制装置的构型设计研究成果较少。位置和长度），使用模态方法的钢悬链线立管（SCR）的建议。该方法通过对裸立管的模态分析，考虑VIV抑制的主导模态，确定合适的VIV抑制位置，并引入各种设计参数，计算VIV抑制装置的合理长度。从SCR的数值例子，它表明，从最佳位置所需的列板长度SCR涡激抑制比传统的方法是短得多。这是通过在有效位置安装交错列板来实现的。此外，所提出的方法不需要额外的计算或工程成本，因为所提出的方法遵循与传统方法完全相同的分析过程，除了使用从裸SCR的初始分析获得的裸SCR的模态信息。
A number of studies of vortex-induced vibration (VIV) having important effect on the fatigue performance of riser have performed analytically as well as experimentally in the last decade. However, there are few research results on the configuration design of VIV suppression devices such as fairings, strakes, and etc. Therefore, a systematic design procedure of strake configuration (i.e., location and length) using the modal approach for steel catenary riser (SCR) is proposed in this study. The proposed method considers the dominant mode for VIV suppression through modal analysis of bare riser to find appropriate location and various design parameters are introduced to calculate appropriate length of VIV suppression devices. From the numerical example of SCR, it is shown that the required strake length from the optimal location for VIV suppression of SCR is much shorter than that of the conventional method. This is achieved by staggered strake installation at the effective location. Furthermore, no additional calculations or engineering cost are required for the proposed method, because the proposed method follows exact same analysis procedure of the conventional one except using the modal information of bare SCR obtained from initial analysis of bare SCR.