...Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June 16-21, 2024 Copyright © 2024 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1-880653-78-4; ISSN 1098-6189 www.isope.org Vortex-Induced Vibration...

... of Two-Degree-of-Freedom Vortex-Induced Vibrations Erdem Aktosun1, Ersegun Deniz Gedikli 2 1Department of Shipbuilding and Ocean Engineering, Izmir Ka tip C¸ elebi University, Izmir, Turkey 2Department of Ocean and Resources Engineering, University of Hawaii at Manoa, Honolulu, UH, USA ABSTRACT...

... engineering. However, due to harsh marine environment and complex drilling load, fatigue damage caused by vortex-induced vibration (VIV) is one of the key factors determining the reliable operation of it. Therefore, it is important to study the fatigue damage to ensure its safe operation. In this study...

... ABSTRACT In this paper, an experimental investigation is conducted on the vortex-induced vibration of a rigid cylinder attached with fixed fairing under different inflow angles. The results find that the maximum amplitude of the faired cylinder initially decreases and then increases...

... ABSTRACT In this study, we conduct an experimental investigation into the dynamic response of two hollow cylindrical cantilever beams that are sealed with plastic caps at the end and are subjected to vortex-induced vibrations. We conducted experiments using two polycarbonate cylinders...

... ABSTRACT When seawater streams around risers, it causes vortex-induced vibrations (VIV), which occur in two forms: in-line (IL) and cross-flow (CF). Accurate prediction of coupled IL and CF VIV behaviors are essential for designing risers. The use of the van der Pol nonlinear wake oscillator...

... ABSTRACT We show how to reconstruct the vortex-induced vibrations of a riser from experimental strain measurements using a machine learning framework. We employ a modal decomposition technique followed by inference of the expansion modes using a two-stage optimization routine. A stochastic...

... upstream oil & gas wake oscillator equation vertical riser vibration displacement envelope riser linearly shear plane plot sea current velocity initial condition vibration coefficient boundary condition linearly shear flow shear flow vortex-induced vibration marine riser...

... of experimental tests. oscillation amplitude fiv response bare cylinder flow velocity united states government vibration circular cylinder seyed-aghazadeh velocity range cylinder splitter plate flexible cylinder frequency flexible splitter plate modarre-sadeghi vortex-induced vibration...

... ABSTRACT As one of the ways to obtain ocean current energy, vortex-induced vibration (VIV) can utilize the power of ocean currents at lower velocities. In this study, the error between simulation and experiment is improved by introducing a nonlinear damping term in the simulation, which...

... increase as the drafts increase. INTRODUCTION Flow-induced vibration typically arises as a result of vortex shedding. The vibration is called vortex induced motion (VIM) for large-volume floating platforms, and vortex-induced vibration (VIV) for the long slender cylindrical structures such as risers...

... wind speed displacement wave force fatigue failure anemometer flange member force vane anemometer deviation vibration ultrasonic anemometer meteorological tower offshore meteorological tower soon-duck kwon mode shape wind energy vortex-induced vibration frequency sea level...

... ABSTRACT Accurate prediction of the structural response of flexible cylinder vortex-induced vibrations (VIVs) relies heavily on the accuracy of the acquired hydrodynamic coefficient database. Due to a large number of variables, the construction of systematic hydrodynamic databases from rigid...

... of industrial applications, especially in the field of offshore engineering. Vortex-induced vibration (VIV) is one of the major concerns in design-problems of offshore structures because of the damage it will be caused. Blevins (1979), Jauvtis et al. (2004) and Sun et al (2019) discovered VIV phenomenon can...

... control response amplitude vortex-induced vibration riser span ABSTRACT In this work, a series of tests was conducted in a recirculating water flume to investigate the dynamic behavior of a flexible catenary riser under the combination of internal liquid flow and external shear current. A non...

... Abstract Theoretically, the vortex–induced vibration, caused by the trailing vortex shedding in flows around the blunt body, is probably major reason for structural fatigue damage. An effective way in engineering is to attach a thin plate in the wake of the blunt rigid body, that can reduce...

... renewable energy cylinder vortex-induced vibration grid frequency submerged oscillating circular cylinder numerical investigation equation reservoir simulation circular cylinder transverse williamson upstream oil & gas displacement vibration flow direction & williamson...

... with the increase in the amplitude of the surge motion and the current velocity. The similar vortex shedding mode in the uniform flow is observed during vortex–induced vibrations of riser under the low frequency platform motions. INTRODUCTION Platform experiences six degrees of freedom (6–DoF) motions when...

... frequency cylinder vortex-induced vibration motion amplitude Proceedings of the Thirty-first (2021) International Ocean and Polar Engineering Conference www.isope.org Rhodes, Greece, June 20 25, 2021 Copyright © 2021 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1...

... Abstract The Vortex-induced vibration (VIV) prediction of long flexible cylindrical structures relies on the accuracy of the hydrodynamic database constructed via rigid cylinder forced vibration experiments. However, to create a comprehensive hydrodynamic database with tens of input parameters...