Vortex-induced vibration (VIV) in oscillatory flow is experimentally investigated in the ocean basin. The test flexible cylinder was forced to harmonically oscillate in various combinations of amplitude and period with Keulegan-Carpenter () number between 26 and 178 in three different maximum reduced velocities, , , and separately. VIV responses at cross-flow (CF) direction are investigated using modal decomposition and wavelet transformation. The results show that VIV in oscillatory flow is quite different from that in steady flow; features, such as intermittent VIV, hysteresis, amplitude modulation, and mode transition (time sharing) are observed. Moreover, a VIV developing process including “building-up,” “lock-in,” and “dying-out” in oscillatory flow, is further proposed and analyzed.
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Shanghai Jiao Tong University,
Centre for Ships and Ocean Structures, NTNU,
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February 2014
Research-Article
Features of Vortex-Induced Vibration in Oscillatory Flow
Shixiao Fu,
Shixiao Fu
1
e-mail: shixiao.fu@sjtu.edu.cn
1Corresponding author.
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Jungao Wang,
Shanghai Jiao Tong University,
Jungao Wang
State Key Laboratory of Ocean Engineering
,Shanghai Jiao Tong University,
Shanghai
, China
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C. M. Larsen
Centre for Ships and Ocean Structures, NTNU,
C. M. Larsen
Department of Marine Technology
,Centre for Ships and Ocean Structures, NTNU,
Trondheim
, Norway
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Shixiao Fu
e-mail: shixiao.fu@sjtu.edu.cn
Jungao Wang
State Key Laboratory of Ocean Engineering
,Shanghai Jiao Tong University,
Shanghai
, China
Rolf Baarholm
Statoil
,Trondheim
, Norway
Jie Wu
Marintek
,Trondheim
, Norway
C. M. Larsen
Department of Marine Technology
,Centre for Ships and Ocean Structures, NTNU,
Trondheim
, Norway
1Corresponding author.
Contributed by the Ocean, Offshore, and Arctic Engineering Division of ASME for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received April 23, 2013; final manuscript received October 3, 2013; published online November 28, 2013. Assoc. Editor: Wei Qiu.
J. Offshore Mech. Arct. Eng. Feb 2014, 136(1): 011801 (10 pages)
Published Online: November 28, 2013
Article history
Received:
April 23, 2013
Revision Received:
October 3, 2013
Citation
Fu, S., Wang, J., Baarholm, R., Wu, J., and Larsen, C. M. (November 28, 2013). "Features of Vortex-Induced Vibration in Oscillatory Flow." ASME. J. Offshore Mech. Arct. Eng. February 2014; 136(1): 011801. https://doi.org/10.1115/1.4025759
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