Abstract
Steel catenary riser (SCR) is the transmission device between the seabed and the floating production facilities. As developments move into deeper water, the fatigue life of the riser can become critical to the whole production system, especially due to the vortex-induced vibration (VIV), which is the key factor to operational longevity. As a result, experimental investigation about VIV of the riser was performed in a large plane pool which is 60 m long, 36 m wide and 6.5 m deep. Experiments were developed to study the influence of current speed and seabed on VIV of SCR. The results show that amplitudes of strain and response frequencies increase with the current speed both in cross-flow (CF) and in-line (IL). When the current speed is high, multi-mode response is observed in the VIV motion. The amplitudes of strain in IL direction are not much smaller than those in CF direction. The seabed has influence on the response frequencies of riser and the positions of damage for riser.
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This study was financially supported by the National High Technology Research and Development Program of China (863 Program, Grant No. 2010AA09Z303), the National Natural Science Foundation of China (Grant No. 41174157), and Shandong Province Scientific Research Foundation for Outstanding Young Scientists Program (Grant No. BS2013HZ014).
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Fan, Yt., Mao, Hy., Guo, Hy. et al. Experimental investigation on vortex-induced vibration of steel catenary riser. China Ocean Eng 29, 691–704 (2015). https://doi.org/10.1007/s13344-015-0049-4
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DOI: https://doi.org/10.1007/s13344-015-0049-4