Kill Line Model Cross Flow Inline Coupled Vortex-Induced Vibration
Author(s)
Wu, Baiheng; Le Garrec, Jorlyn M.; Fan, Dixia; Triantafyllou, Michael S
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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 of ten 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.
Date issued
2017-06Department
Massachusetts Institute of Technology. Department of Mechanical EngineeringJournal
Volume 2: Prof. Carl Martin Larsen and Dr. Owen Oakley Honoring Symposia on CFD and VIV
Publisher
ASME International
Citation
Wu, Baiheng, Jorlyn Le Garrec, Dixia Fan, and Michael S. Triantafyllou. “Kill Line Model Cross Flow Inline Coupled Vortex-Induced Vibration.” Volume 2: Prof. Carl Martin Larsen and Dr. Owen Oakley Honoring Symposia on CFD and VIV (June 25, 2017).
Version: Final published version
ISBN
978-0-7918-5764-9