VIV in oscillatory flow is experimentally investigated in the ocean basin. The flexible test cylinder was forced to harmonically oscillate in various combinations of amplitude and period. VIV responses at cross flow 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; novel features such as ‘intermittent VIV’, amplitude modulation, mode transition are observed. Moreover, a VIV developing process including “Building-Up”, “Lock-In” and “Dying-Out” in oscillatory flow, is further proposed and analyzed.
VIV of Flexible Cylinder in Oscillatory Flow
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Fu, S, Wang, J, Baarholm, R, Wu, J, & Larsen, CM. "VIV of Flexible Cylinder in Oscillatory Flow." Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Volume 7: CFD and VIV. Nantes, France. June 9–14, 2013. V007T08A021. ASME. https://doi.org/10.1115/OMAE2013-10348
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