1.State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2.Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China
A new time domain Vortex-Induced Vibration (VIV) prediction method for marine riser is proposed, the special added mass element is integrated together, which can take into consideration the variation effect of added mass coefficient on modal analysis and VIV prediction. Based on the recommended prediction model, the VIV response of riser models under uniform flow and sheared flow are simulated and the predicted results are compared with the root mean square amplitude and curvature, strain and displacement response time histories and amplitude spectra of above test data. It can be found that the new time domain model can predict VIV response of marine risers effectively and the predicted results are much more consistent with observed test data than that of traditional numerical models, the variation effect of added mass coefficient on VIV response can affect the predicted results evidently.
袁昱超1,2, 薛鸿祥1,2, 唐文勇1,2. 计及附加质量系数变化效应的立管涡激振动时域响应研究[J]. 振动与冲击, 2018, 37(1): 53-59.
YUAN Yu-chao1,2, XUE Hong-xiang1,2, TANG Wen-yong1,2. Study of time domain Vortex-Induced Vibration response for riser in consideration of added mass coefficient variation effect. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(1): 53-59.
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