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提出扰流纤维抑制装置、反向耦合单组双螺旋叶片式抑制装置以及反向耦合双组双螺旋叶片式抑制装置三种不同的涡激振动抑制装置设计方案,分别对其进行试验研究,对比分析各模型的振动特性和抑制效果。试验结果表明,所设计的涡激振动抑制装置均能在一定程度上降低立管的涡激振动响应。从抑制效果来看,对称来流情况下的双组双螺旋装置的效果最佳,其次为单组双螺旋装置和长扰流纤维装置,而短扰流纤维装置和非对称迎流情况下双组双螺旋装置的效果较差。对称来流和非对称迎流情况下的双组双螺旋装置是相同的,因此,采用双组双螺旋装置时,应根据海域的长期洋流方向,合理地布置该装置,使其最大限度地发挥抑制作用。
Proposed the spoiler fiber suppression device, the reverse coupled single-group double-helix vane suppression device and the reverse coupled double-helical vane suppression device three different vortex-induced vibration suppression device design, respectively, its experimental study, comparison The vibration characteristics and the inhibition effect of each model were analyzed. The experimental results show that the designed vortex-induced vibration suppression device can reduce the vortex-induced vibration response of the riser to a certain extent. From the inhibition effect point of view, the case of symmetrical flow double helix device best, followed by single-group double helix device and long-spoiler fiber device, and the short-spoiler fiber device asymmetric Ying Ying flow case double Group double helix device less effective. In the case of symmetrical incoming flow and non-symmetrical incoming flow, the double-group double-helix devices are the same. Therefore, when using double-group double-helix devices, the device should be properly deployed according to the long-term current direction in the sea to maximize its use Inhibition.