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Keywords: decay test
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Proceedings Papers
Numerical Simulation of the Interaction Between FOWT and Focused Wave by a Hybrid Method
Available to Purchase
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-041
... the force and moment of the mooring system in every time step. The static equilibrium tests of the wind turbine with and without mooring are carried out first. Then, three decay tests in the freedom of heave, surge, and pitch are carried out. Finally, the focused waves are generated, and the interaction...
Proceedings Papers
Modeling FOWT Hydrodynamic Behavior with Comparison to Basin Test Experiments
Available to Purchase
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-039
... agreement offshore wind turbine social responsibility wind energy foundation prediction focused wave case 2 sustainability modeling fowt hydrodynamic behavior decay test balance equation mesh sub-sea system coefficient floater elevation initial position pontoon Proceedings of the Thirty...
Proceedings Papers
Numerical Study on the Hydrodynamic Response of Y-Shaped Floating Offshore Wind Turbine Platform
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-038
...-phase flow interface. The cases are composed of the static equilibrium loading, the free decay test (including heave, surge and pitch motions) and a pair of focused wave conditions. From the simulation, the six degree of freedom motion and mooring system are in good contrast with experiment...
Proceedings Papers
The Use of Free Decay Tests as a Means to Ascertain Hydrodynamic Characteristics of a Wave Energy Converter
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-111
... ABSTRACT Free decay tests are less onerous to carry out compared to experiments that include waves. These tests can also shed light on hydrodynamic characteristics of a device, such as added mass, stiffness and damping. This knowledge can then inform numerical models set up for the device...
Proceedings Papers
A Comparative Numerical Study of Hydrodynamic Response of a Floating Offshore Wind Turbine Semi-Submersible Platform by Using QaleFOAM
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-066
... load cases, moored decay tests, and a pair of focused wave cases in both operational and extreme sea state conditions, the dynamic responses of this semi-submersible platform are evaluated. Furthermore, the reliability and accuracy of the adopted hybrid model are validated against the experimental...
Proceedings Papers
A Comparative Study of Potential-Flow-Based Numerical Models to Experimental Tests of a Semi-Submersible Floating Wind Turbine Platform
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-067
.... Decay tests and focused waves are simulated in the numerical models, and these are compared to experimental results, using a 1:70 scale model of the system. Comparisons between the numerical models and physical experiments are made. Results of surge motion response and line tension are presented...
Proceedings Papers
Hydrodynamic Simulations of a FOWT Platform (1st FOWT Comparative Study) Using OpenFOAM Coupled to MoodyCore
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-068
... Laboratory Ocean Basin at the University of Plymouth, UK. The test cases under consideration are (i) static equilibrium load cases, (ii) free decay tests and (iii) two focused wave cases with different wave steepness. The FOWT is modelled using a two-phase Navier-Stokes solver inside the OpenFOAM-v2006...
Proceedings Papers
Modelling the Hydrodynamic Response of a Floating Offshore Wind Turbine Using OpenFOAM and a Quasi-Static Mooring Model
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-071
... ABSTRACT This work represents a contribution to the 1 st FOWT Comparative Study. The Reynolds-averaged Navier-Stokes solver, interFoam, is used to simulate the hydrodynamic response of a 1:70 scale model floating offshore wind turbine in load cases including static equilibrium, decay tests...
Proceedings Papers
Hydrodynamic Response of a Floating Offshore Wind Turbine
Available to PurchaseGaspard Engel, Matthieu Tierno, Guillaume Ducrozet, Benjamin Bouscasse, Vincent Leroy, Pierre Ferrant
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-171
...) to ensure the link between the wave model based on the High-Order Spectral (HOS) method (Ducrozet, 2007) and foamStar, the OpenFOAM-based CFD solver. decay test sustainable development sustainability sub-sea system france government europe government offshore projects planning and execution...
Proceedings Papers
Numerical Study on the Effect of Water Depth on Roll Natural Period and Damping Coefficient of DTC in Shallow Water Regions
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Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-320
... condition such as operating on inland waterways. Roll decay tests were undertaken to obtain the roll period of two models (Container ship and Bulk carrier), with different CB, in calm water condition with zero forward speed. From the experiment, it was shown clearly that the roll period was affected...
Proceedings Papers
Validation of Open-Source Overset Mesh Method Using Free-Decay Tests of Floating Offshore Wind Turbine
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Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1179
... ABSTRACT The performance of the overset meshing tool implemented in the opensource Computational Fluid Dynamics (CFD) software OpenFOAM© is investigated in this work. The method is validated against experimental results of free decay tests of a freely-floating vertical cylinder and a Floating...
Proceedings Papers
Development of Platform 6-DOF Motion-Mooring System Coupled Solver Using Open Source Libraries
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Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-205
... solution and experimental results. upstream oil & gas rigid body motion openfoam platform external force platform motion mooring system solver simulation open source library library moordyn node stiffness platform 6-dof motion-mooring system tensile load decay test validation...
Proceedings Papers
Study on the Estimation Methods of Roll Damping Coefficients Using Designed Excitation Device for Harmonic Roll Motion
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Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-515
... vessel also moored with side-by-side configuration, the roll motion characteristic of LNG-BS should be studied to avoid collision between ships. herm test natural period lng test condition time series ship gas monetization excitation device decay test decrement estimation method roll...
Proceedings Papers
Multibody Modelling of Floating Offshore Wind Turbine Foundation for Global Loads Analysis
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Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-392
... heave decay test floater response amplitude operator renewable energy compartment subsea system displacement natural period simulation mooring system rigid body model turbine multibody model Multibody Modelling of Floating Offshore Wind Turbine Foundation for Global Loads Analysis Lucie...
Proceedings Papers
Verification and Validation of Multisegmented Mooring Capabilities in FAST v8
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Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-432
... at the MARIN ocean basin, which includes a multisegmented bridle layout of the mooring system, was used for the verification and validation activities. This paper focuses on free-decay tests because the influence of the multisegmented moorings is most important for yaw motion, which is not excited by waves...
Proceedings Papers
A Wave Basin Model Test Study for a Jackup Moored on the Dock
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Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-026
... wind conditions. And this phenomenon may be attributed to the decrease of the jackup's yaw motion stiffness. In addition, several suggestions are proposed for optimizing the mooring system performance. white noise test jackup moored fender decay test force 12 subsea system sea state yaw...
Proceedings Papers
CFD Simulations for the Design of Offshore Floating Wind Platforms Encompassing Heave Plates
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Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-382
... is dedicated to floating wind turbine. Forced oscillating tests and decay tests of the floater, along both heave and pitch degrees of freedom, are performed with the CFD tool OpenFOAM. Simulations aim at calibrating and validating drag coefficients for the heave plate, based on a methodology developed for CALM...
Proceedings Papers
VIM of Dual Buoyancy Can FSHR System
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Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-376
... amplitudes (or A/D). The damping coefficients could be obtained through a decay test. During the decay test, the buoyancy can system is first excited through an external sinusoidal lift force at the specific modal frequency. After a period of time (1,000 seconds in our case), the system vibration...
Proceedings Papers
Calibration And Validation of a FAST Floating Wind Turbine Model of the DeepCwind Scaled Tension-Leg Platform
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Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-033
... decay test university floating production system Calibration and Validation of a FAST Floating Wind Turbine Model of the DeepCwind Scaled Tension- Leg Platform Gordon M. Stewart and Matthew A. Lackner Mechanical Engineering Department, University of Massachusetts Amherst, Massachusetts, United...
Proceedings Papers
Viscous Flow Calculations Around Transverse Sections of a Floating LNG Storage Terminal In Heave And Roll Motions
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Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-175
... computation equation hull history free decay test transverse section approximation grid midstream oil & gas viscous flow calculation oscillation boundary calculation velocity component liquified natural gas gas monetization amplitude upstream oil & gas coefficient...
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