Currents and waves cause flow-structure interaction problems in systems installed in the ocean. Particularly for bluff bodies, vortices form in the body wake, which can cause strong structural vibrations (Vortex-Induced Vibrations, VIV). The magnitude and frequency content of VIV is determined by the shape, material properties, and size of the bluff body, and the nature and velocity of the oncoming flow. Riser systems are extensively used in the ocean to drill for oil wells, or produce oil and gas from the bottom of the ocean. Risers often consist of a central pipe, surrounded by several smaller cylinders, including the kill and choke lines. We present a series of experiments involving forced in-line and cross flow motions of short rigid sections of a riser containing 6 symmetrically arranged kill and choke lines. The experiments were carried out at the MIT Towing Tank. We present a systematic database of the hydrodynamic coefficients, consisting of the forces in phase with velocity and the added mass coefficients that are also suitable to be used with semi-empirical VIV predicting codes.
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ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering
June 25–30, 2017
Trondheim, Norway
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-5764-9
PROCEEDINGS PAPER
Kill Line Model Cross Flow Inline Coupled Vortex-Induced Vibration Available to Purchase
Michael S. Triantafyllou
Michael S. Triantafyllou
MIT, Cambridge, MA
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Baiheng Wu
MIT, Cambridge, MA
Jorlyn Le Garrec
MIT, Cambridge, MA
Dixia Fan
MIT, Cambridge, MA
Michael S. Triantafyllou
MIT, Cambridge, MA
Paper No:
OMAE2017-61191, V002T08A010; 6 pages
Published Online:
September 25, 2017
Citation
Wu, B, Le Garrec, J, Fan, D, & Triantafyllou, MS. "Kill Line Model Cross Flow Inline Coupled Vortex-Induced Vibration." Proceedings of the ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. Volume 2: Prof. Carl Martin Larsen and Dr. Owen Oakley Honoring Symposia on CFD and VIV. Trondheim, Norway. June 25–30, 2017. V002T08A010. ASME. https://doi.org/10.1115/OMAE2017-61191
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