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Готові списки джерел за темами / Offshore wind turbines, nonlinear water waves, breaking waves, Boundary Element Method

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Добірка наукової літератури з теми "Offshore wind turbines, nonlinear water waves, breaking waves, Boundary Element Method"

Автор: Grafiati

Опубліковано: 10 березня 2023

Оновлено: 31 липня 2025

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Статті в журналах з теми "Offshore wind turbines, nonlinear water waves, breaking waves, Boundary Element Method"

1

Esmaeelpour, Keyvan, Rouzbeh Shafaghat, Rezvan Alamian, and Rasoul Bayani. "Numerical study of various geometries of breakwaters for the installation of floating wind turbines." Journal of Naval Architecture and Marine Engineering 13, no. 1 (2016): 27–37. http://dx.doi.org/10.3329/jname.v13i1.22866.

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Анотація:

The everyday growing populations all over the world and the necessity of increase in consumption of fossil energies have made the human to discover new energy resources, which are clean, cheap and renewable. Wind energy is one of the renewable energy resources. Considerable wind speed has made settling of wind turbines at sea beneficial and appealing. For this purpose, choosing the appropriate plates to set up wind turbines on the surface of sea is necessary. Regarding the installation condition, by choosing suitable geometry for floating breakwaters, offshore wind turbine can be mounted on th

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2

Zheng, Zhiping, Jikang Chen, Hui Liang, Yongsheng Zhao, and Yanlin Shao. "Hydrodynamic Responses of a 6 MW Spar-Type Floating Offshore Wind Turbine in Regular Waves and Uniform Current." Fluids 5, no. 4 (2020): 187. http://dx.doi.org/10.3390/fluids5040187.

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Анотація:

In order to improve the understanding of hydrodynamic performances of spar-type Floating Offshore Wind Turbines (FOWTs), in particular the effect of wave-current-structure interaction, a moored 6MW spar-type FOWT in regular waves and uniform current is considered. The wind loads are not considered at this stage. We apply the potential-flow theory and perturbation method to solve the weakly-nonlinear problem up to the second order. Unlike the conventional formulations in the inertial frame of reference, which involve higher derivatives on the body surface, the present method based on the pertur

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3

Marino, E., H. Nguyen, C. Lugni, L. Manuel, and C. Borri. "Irregular Nonlinear Wave Simulation and Associated Loads on Offshore Wind Turbines." Journal of Offshore Mechanics and Arctic Engineering 137, no. 2 (2015). http://dx.doi.org/10.1115/1.4029212.

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Анотація:

The accuracy of predicted loads on offshore wind turbines depends on the mathematical models employed to describe the combined action of the wind and waves. Using a global simulation framework that employs a domain-decomposition strategy for computational efficiency, this study investigates the effects of nonlinear waves on computed loads on the support structure (monopile) and the rotor–nacelle assembly of a bottom-supported offshore wind turbine. The fully nonlinear (FNL) numerical wave solver is invoked only on subdomains where nonlinearities are detected; thus, only locally in space and ti

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4

Moghtadaei, Abdolmajid, Madjid Karimirad, Arash Abbasnia, Charles Young, and Trevor Whittaker. "Analysis of shallow water steep waves interaction with a bottom-fixed monopile offshore wind turbine using an implicit Navier–Stokes and experimental model." Journal of Ocean Engineering and Marine Energy, July 4, 2025. https://doi.org/10.1007/s40722-025-00414-9.

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Анотація:

Abstract The nonlinear interaction of the high-steep waves with a bottom-fixed monopile is studied experimentally and numerically in this research. The predominance of the near-breaking waves in sea-bottom-effect waters where fixed structures such as wind turbines have been located drives the incentive of the endeavour. Hence, viscous fluid kinematics due to the interaction of regular and irregular wave regimes with the monopile is determined by using a three-dimensional viscous numerical model that takes advantage of an implicit finite volume to solve the Reynolds Average Navier–Stokes (RANS)

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5

Yang, Yong, Peter K. Stansby, Benedict D. Rogers, Eugeny Buldakov, Dimitris Stagonas, and Samuel Draycott. "The loading on a vertical cylinder in steep and breaking waves on sheared currents using smoothed particle hydrodynamics." Physics of Fluids 35, no. 8 (2023). http://dx.doi.org/10.1063/5.0160021.

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Анотація:

Waves and currents coexist in a wide range of natural locations for the deployment of offshore structures and devices. This combined wave–current environment largely determines the loading of vertical surface piercing cylinders, which are the foundations typically used for offshore wind turbines along with many other offshore structures. The smoothed particle hydrodynamics (SPH) code DualSPHysics is used to simulate focused waves on sheared currents and assess subsequent loading on a vertical cylinder. Outputs from another numerical model are used to define the SPH inlet–outlet boundary condit

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6

Mj, Dripta, Mark L. McAllister, Henrik Bredmose, Thomas A. A. Adcock, and Paul H. Taylor. "Harmonic structure of wave loads on a surface piercing column in directionally spread and unidirectional random seas." Journal of Ocean Engineering and Marine Energy, January 11, 2023. http://dx.doi.org/10.1007/s40722-022-00276-5.

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AbstractWe investigate the harmonic structure of wave-induced loads on vertical cylinders with dimensions comparable to those used to support offshore wind turbines. Many offshore wind turbines are designed, so the structural resonance is two or three times the fundamental wave loading period, which may be excited by higher harmonics of wave loading. The suitability of a ‘Stokes-type’ model for force is examined. We analyse experimental data for unidirectional and directionally spread sea-states. We demonstrate that approximate harmonic components may be extracted from a random time series, us

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7

Tsao, Wen-Huai, Ying-Chuan Chen, Christopher Kees, and Lance Manuel. "Response Mitigation of Floating Platform by Porous-Media Tuned Liquid Dampers." Journal of Offshore Mechanics and Arctic Engineering, April 11, 2023, 1–45. http://dx.doi.org/10.1115/1.4062292.

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Abstract A porous-media-tuned liquid damper (PMTLD) can serve as an effective and economical dynamic vibration absorber. Placing porous media within a water tank can improve the capacity for energy dissipation and optimize the performance by varying its material properties. Two numerical models are adopted for the simulations of the sloshing problem in PMTLD and the dynamics of a floating platform in waves. The first potential-based approach employs a mixed-type boundary value problem (BVP) solver and a free-surface particle tracker. This approach not only simulates the inviscid water wave but

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Дисертації з теми "Offshore wind turbines, nonlinear water waves, breaking waves, Boundary Element Method"

1

MARINO, ENZO. "An integrated nonlinear wind-waves model for offshorewind turbines." Doctoral thesis, 2010. http://hdl.handle.net/2158/600464.

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Анотація:

This thesis presents a numerical model capable of simulating offshore wind turbines exposed to extreme loading conditions. External condition-based extreme responses are reproduced by coupling a fully nonlinear wave kinematic solver with a hydro-aero-elastic simulator. First, a two-dimensional fully nonlinear wave simulator is developed. The transient nonlinear free surface problem is formulated assuming the potential theory and a higher-order boundary element method (HOBEM) is implemented to discretize Laplace's equation. For temporal evolution a second-order Taylor series expansion is used.

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Тези доповідей конференцій з теми "Offshore wind turbines, nonlinear water waves, breaking waves, Boundary Element Method"

1

Hague, Caroline H., and Chris Swan. "Numerical Simulations of Large Deep Water Waves: The Application of a Boundary Element Method." In 25th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/omae2006-92158.

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This paper concerns the description of extreme surface water waves in deep water. A fully nonlinear numerical wave model in three dimensions is presented, based on the Boundary Element Method (BEM), and is applied to nonlinear focusing of wave components with varying frequency and direction of propagation to form highly nonlinear groups. By using multiple fluxes at corners and edges of the numerical domain the “corner problem” associated with BEM-based models in physical space is overcome. A two-dimensional version of the method is also employed to model unidirectional cases, and examples pres

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2

Marino, E., C. Lugni, L. Manuel, H. Nguyen, and C. Borri. "Simulation of Nonlinear Waves on Offshore Wind Turbines and Associated Fatigue Load Assessment." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24623.

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By using a global simulation framework that employs a domain-decomposition strategy for computational efficiency, this study investigates the effects of fully nonlinear (FNL) waves on the fatigue loads exerted on the support structure (monopile) of a fixed-bottom offshore wind turbine. A comparison is made with more conventional linear wave hydrodynamics. The FNL numerical wave solver is invoked only on specific sub-domains where nonlinearities are detected; thus, only locally in space and time, a linear wave solution is replaced by the FNL results as input to the Morison equation used for the

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3

Marino, E., H. Nguyen, C. Lugni, L. Manuel, and C. Borri. "Irregular Nonlinear Wave Simulation and Associated Loads on Offshore Wind Turbines." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-11047.

Повний текст джерела

Анотація:

The accuracy of predicted loads on offshore wind turbines depends on the mathematical models employed to describe the combined action of the wind and waves. Using a global simulation framework that employs a domain-decomposition strategy for computational efficiency, this study investigates the effects of nonlinear waves on computed loads on the support structure (monopile) and the rotor-nacelle assembly of a bottom-supported offshore wind turbine. The fully nonlinear (FNL) numerical wave solver is invoked only on sub-domains where nonlinearities are detected; thus, only locally in space and t

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4

Bunnik, Tim, and Erik-Jan de Ridder. "Using Nonlinear Wave Kinematics to Estimate the Loads on Offshore Wind Turbines in 3-Hour Sea States." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77807.

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Анотація:

The effects of operational wave loads and wind loads on offshore mono pile wind turbines are well understood. For most sites, however, the water depth is such that breaking or near-breaking waves will occur causing impulsive excitation of the mono pile and consequently considerable stresses, displacements and accelerations in the monopile, tower and turbine. As has been shown in earlier, recent publications, Computational Fluid Dynamics (CFD) can be used to accurately analyze wave impacts on offshore wind turbines. However, it is not yet well suited to study the statistical variability of wave

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5

Bai, K. J., J. H. Kyoung, and J. W. Kim. "Numerical Computations for a Nonlinear Free Surface Problem in Shallow Water." In ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28463.

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This paper describes a finite element method applied to a nonlinear free surface flow problem for a ship moving in three dimensions. The physical model is taken to simulate the towing tank experimental conditions. The exact nonlinear free-surface flow problem formulated by an initial/boundary value problem is replaced by an equivalent weak formulation. The same problem was considered earlier by Bai, et. al. [1] where some irregularities were observed in the downstream waves and a transom stern ship geometry could not be treated. In the present paper, specifically, three improvements are made f

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6

Islam, Mohammed, Dong Cheol Seo, and Wayne Raman-Nair. "Modelling and Analysis of Hydrodynamics of a Submerged Structure in Extreme Waves Using a SPH-Based Tool." In ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/omae2021-63034.

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Abstract The applications of a Smoothed Particle Hydrodynamics (SPH)-based, a Finite Volume Method (FVM)-based and a Boundary Element Method (BEM)-based tools to investigate the nonlinear interactions between large waves and a submerged horizontal circular structure and to some extent a rectangular cylinder at various submergence depths in deep water conditions are presented. The main aim is to validate the Lagrangian technique based SPH tool to predict the wave-structure interaction forces under large waves. The features of typical force curves in a wave cycle, the magnitude of wave forces, a

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7

Johannessen, Thomas B. "Estimating Wave Induced Kinematics Underneath Measured Time Histories of Surface Elevation." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18727.

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Abstract The present paper is concerned with the accurate prediction of nonlinear wave kinematics underneath measured time histories of surface elevation. It is desired to develop a method which is useful in analysis of offshore measurements close to wind turbine foundations. The method should therefore be robust in relatively shallow water and should be able to account for the presence of the foundation and the shortcrestedness of offshore seastates. The present method employs measurements of surface elevation time histories at one or a small number of locations and solves the associated velo

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8

Bouscasse, Benjamin, Andrea Califano, Young Myung Choi, et al. "Qualification Criteria and the Verification of Numerical Waves: Part 2: CFD-Based Numerical Wave Tank." In ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/omae2021-63710.

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Анотація:

Abstract There is increasing interest in numerical wave simulations as a tool to design offshore structures, especially for the prediction of stochastic nonlinear wave loads like those related to air-gap and wave impact. Though the simulations cannot replace all experiments, they are now competitive on some topics such as the computations of wind and current coefficients. To proceed further it is necessary to improve the procedure to account for another complex environmental factor, wave motion. This paper addresses an industrial collaboration to develop modeling practices and qualification cr

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9

Hermundstad, Ole Andreas, Shuhong Chai, Guillaume de Hauteclocque, et al. "Committee I.2: Loads." In 21st International Ship and Offshore Structures Congress, Volume 1. SNAME, 2022. http://dx.doi.org/10.5957/issc-2022-committee-i-2.

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Анотація:

Committee Mandate Concern for the environmental and operational loads from waves, wind, current, ice, slamming, sloshing, green water, weight distribution and any other operational factors. Consideration shall be given to deterministic and statistical load predictions based on model experiments, full-scale measurements and theoretical methods. Uncertainties in load estimations shall be highlighted. The committee is encouraged to cooperate with the corresponding ITTC committee. Introduction The content of this committee's report is composed in accordance with its mandate by the expertise of its

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10

Tsao, Wen-Huai, Ying-Chuan Chen, Christopher E. Kees, and Lance Manuel. "Response Mitigation of Floating Platform by Porous-Media Tuned Liquid Dampers." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-79607.

Повний текст джерела

Анотація:

Abstract A porous-media tuned liquid damper (PMTLD) can serve as an eco-friendly, economical, and effective dynamic vibration absorber. Placing porous media within a water tank can improve the capacity for energy dissipation and optimize the performance by varying its material properties. The numerical simulations of the floating platform dynamics in waves coupled with the sloshing problem in PMTLD are emphasized. Two numerical methods are adopted for fluid computation. The first potential-based approach employs a mixed-type boundary value problem (BVP) solver, which is implemented by the boun

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