Experimental Investigation on Vortex-Induced Vibration of Steel Catenary Riser

• Published in: China ocean engineering Vol. 29; no. 5; pp. 691 - 704
• Main Author: 范宇婷 毛海英 郭海燕 刘庆海 李效民
• Format: Journal Article
• Language: English
• Published: Nanjing Chinese Ocean Engineering Society 01.10.2015; Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100010, China%College of Engineering, Ocean University of China, Qingdao 266100, China
• Subjects: Coastal Sciences; Engineering; Fluid- and Aerodynamics; Marine & Freshwater Sciences; Numerical and Computational Physics; Oceanography; Offshore Engineering; Simulation; 响应频率; 振动试验; 接触网; 涡激振动; 电流速度; 白细胞介素; 立管; 钢; current speed; steel catenary riser (SCR); seabed; vortex-induced vibration (VIV)
• ISSN: 0890-5487; 2191-8945
• DOI: 10.1007/s13344-015-0049-4

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.