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1-18 of 18
Keywords: vim
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Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-125
... ABSTRACT This paper presents the CFD investigation of the vortex induced motion (VIM) of a caisson model during the installation phase. The simulations were performed by solving the unsteady 3D Navier-Stokes equation. The Dynamic Fluid-Body Interaction (DFBI) tool is utilized to simulate...
Proceedings Papers
Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-390
... ABSTRACT Floating offshore platforms mostly consist of a single cylinder or multi-cylinder, which is susceptible to vortex-induced motions (VIM) in the ocean current. In this paper, numerical simulations are performed to study the VIM of four rigidly connected cylinder at a large reduced...
Proceedings Papers
Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-397
... simulation vortex riser tlp platform uniform flow vim standard deviation vim response Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022 Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE...
Proceedings Papers
Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1183
... the current effect on the hydrodynamic responses of spar type FOWT. The vortex induced motions (VIMs) phenomenon is clearly observed in the model test result. The results of model test and numerical simulation are compared and analyzed to study the VIM characteristics of the FOWT system. Furthermore, the wave...
Proceedings Papers
Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3256
... ABSTRACT In this paper, 2DoF VIM of a semi-submersible FOWT subjected to current flow is investigated numerically, which could influence its aerodynamic performance but has been rarely studied. Simulation results for a number of flow speeds show that lock-in occurs across a wide range...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-231
..., Shandong, China ABSTRACT In order to study vortex-induced motions (VIM) response of floating cylinders, a model experiment was conducted in a water flume at reduced velocity from 1.3 to 10.2. Considering the aspects of response amplitude, vortex shedding frequency, force analysis, and motion trajectories...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-039
... the dynamic response of vortex-induced motions (VIM). This paper tries to reveal the mechanisms of the vortex shedding, wake interference, and their impacts on the VIM of a paired-column semi-submersible by means of computational fluid dynamics (CFD). In the present work, a scaled model (1:54) of paired...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-055
... ABSTRACT Offshore platforms exerted by long-period flow may experience large vortex induced motion (VIM), which will induce fatigue damage of chains and risers connected. To study this problem, the discrete vortex method (DVM) is employed here. The vortex-induced vibration of twodimensional...
Proceedings Papers
Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-716
... VIM Induced Fatigue Damages on Steel Catenary Risers of a Semi-Submersible FPS in South China Sea Tie Ren 1,2 , Tiebing Shan 1 , Zhiping Shen 1 , Pu Wang 1 ,Shixiao Fu 2 1. Department of Offshore Engineering, Marine Design & Research Institute of China Shanghai, China 2. SKLOE - State Key...
Proceedings Papers
Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-044
... effective stiffness frequency conf ocean offshore arct eng mooring system fpso platform paired-column semi-submersible platform cylinder vim pc semi experiment semi vortex-induced motion floating production system sway vim test subsea system simulation upstream oil & gas...
Proceedings Papers
Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-041
... upstream oil & gas vim current incident angle sway motion Numerical Simulation of Vortex-induced Motion of a Deep Draft Semi-Submersible Platform Zhenghao Liu, Weiwen Zhao, Decheng Wan* Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Key Laboratory of Ocean...
Proceedings Papers
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-622
... Abstract A platform that has shown promise for larger payload and ultra-deepwater applications is the Deep Draft Column Stabilized Floater (DDCSF) concept. An area of concern for this concept is its susceptibility to Vortex Induced Motions (VIM) due to its deeper draft that results in higher...
Proceedings Papers
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-636
... CFD Simulation of Vortex-Induced Motions of a Deep Draft Semi-Submersible Platform Chia-Rong Chen College Station, Texas, USA Hamn-Ching Chen Ocean Engineering Program, Zachry Department of Civil Engineering, Texas A&M University College Station, Texas, USA ABSTRACT The vortex-induced motion (VIM...
Proceedings Papers
Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-376
... current flow, and vortex induced motion (VIM) occurs. This paper presents the investigation results of the VIM phenomenon, discloses the characteristics of the relative motions between these two buoyancy cans, and provides technical guidelines to the dual buoyancy can FSHR system design. First...
Proceedings Papers
Rodolfo Trentin Gonçalves, Guilherme Feitosa Rosetti, André Luís Condino Fujarra, Kazuo Nishimoto, Carre Oliveira
Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-424
... by means of the yaw natural motion period in still water. The maximum angular amplitude of yaw was approximately 5 degrees, verified for the 0 degree incidence. This periodic yaw motion of large amplitudes, together with the well known translational motions, named Vortex-Induced Motion (VIM), may...
Proceedings Papers
Rodolfo Trentin Gonçalves, Guilherme Feitosa Rosetti, Guilherme Rosa Franzini, André Luís Condino Fujarra, Kazuo Nishimoto
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-255
...Case Study of Vortex-induced Motions (VIM) on a Monocolumn Platform Applying the Hilbert-Huang Transform Method Rodolfo Trentin Gonçalves Guilherme Feitosa Rosetti Guilherme Rosa Franzini André Luís Condino Fujarra Kazuo Nishimoto TPN Numerical Offshore Tank Laboratory Department of Naval...
Proceedings Papers
Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-101
... significant vortex-induced motion (VIM) in the direction normal to the current, and its amplitude is strongly dependent not only on the current speed but also on the wave excited particle velocity. INTRODUCTION Recently the effect of current environment on the behavior of offshore structures has been...
Proceedings Papers
Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-020
... ABSTRACT A new technique for VIM reduction was tested at the Offshore Model Basin. It can be described as a passive dynamic method, where the VIM of relatively small and mobile structures (pendulums) affects the VIM of a larger floating structure. The new approach was verified for two...