Vortex-induced vibration (VIV) of a circular cylinder in oscillatory flow is investigated numerically in this study. The incompressible Reynolds-Averaged Navier-Stokes equations governing fluid flow around a circular cylinder are solved using Arbitrary Langrangian-Eulerian (ALE) scheme and Petrov-Galerkin finite element method. The equation of motion is solved for the displacements of the cylinder both in the inline and cross-flow directions. The numerical model is firstly validated against the experimental results of one-degree-of-freedom VIV in cross-flow direction. It is found that both VIV frequency and amplitude vary with reduced velocity for a fixed KC number. In most of the simulated cases the vibration comprises of multiple frequencies of different amplitudes. Each frequency component is multiple times of the frequency of the oscillatory flow. Two-degree-of-freedom VIV is investigated with the same parameters used in the one-degree-of-freedom case. By examining the XY-trajectory of the vibration, it if found that the vibration follows different trajectory for different KC numbers or reduced velocities.
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ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2011
Rotterdam, The Netherlands
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4439-7
PROCEEDINGS PAPER
Numerical Investigation of Vortex-Induced Vibration (VIV) of a Circular Cylinder in Oscillatory Flow
Ming Zhao,
Ming Zhao
University of Western Sydney, Penrith, NSW, Australia
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Liang Cheng,
Liang Cheng
The University of Western Australia, Crawley, WA, Australia
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Tongming Zhou
Tongming Zhou
The University of Western Australia, Crawley, WA, Australia
Search for other works by this author on:
Ming Zhao
University of Western Sydney, Penrith, NSW, Australia
Liang Cheng
The University of Western Australia, Crawley, WA, Australia
Tongming Zhou
The University of Western Australia, Crawley, WA, Australia
Paper No:
OMAE2011-50074, pp. 597-603; 7 pages
Published Online:
October 31, 2011
Citation
Zhao, M, Cheng, L, & Zhou, T. "Numerical Investigation of Vortex-Induced Vibration (VIV) of a Circular Cylinder in Oscillatory Flow." Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. Volume 7: CFD and VIV; Offshore Geotechnics. Rotterdam, The Netherlands. June 19–24, 2011. pp. 597-603. ASME. https://doi.org/10.1115/OMAE2011-50074
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