Numerical study of an ice-offshore wind turbine structure interaction with the pile-soil interaction under stochastic wind loads

Liu, Yingzhou; Wang, Wenhua; Cui, Liang; Li, Xin

doi:10.1016/j.oceaneng.2023.113984

Cited by 12 publications

(4 citation statements)

References 22 publications

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“…However, the complexity of offshore wind and waves [14] makes the turbulence intensity of incoming wind crucial for the power and load distribution of floating wind turbines. Variations in turbulence intensity [15] can lead to abrupt changes in wind loads on various parts of the turbine structure, increasing fatigue loads, reducing safety, and shortening the lifespan [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Turbulence Intensity on Aerodynamic Loads of Floating Wind Turbine under Wind–Wave Coupling Effect

Tian,

Shi,

Zhang

et al. 2024

Sustainability

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This study first employs TurbSim and OpenFAST (Fatigue, Aerodynamics, Structures, Turbulence) programs for secondary development to comprehensively model the NREL-5MW semi-submersible wind turbine and OC4-DeepC wind floating platform with wind–wave interaction. Next, we investigate the dynamic response of floating wind turbines under the complex coupling of turbulent winds and irregular waves. Turbulent wind fields were simulated using the IEC Kaimal model with turbulence intensities of 5% and 20%. Additionally, two irregular waves were simulated with the Pierson–Moskowitz (P–M) spectrum. The results indicate that in turbulent wind conditions, the aerodynamic power of the wind turbine and the root bending moments of the blades are significantly influenced by turbulence, while the impact of waves is minimal. The coupled motion response of the floating platform demonstrates that turbulence intensity has the greatest impact on the platform’s heave and pitch motions, underscoring the importance of turbulence in platform stability. This study provides essential insights for designing and optimizing floating wind turbines in complex wind–wave coupling offshore environments.

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Section: Introductionmentioning

confidence: 99%

Effect of Turbulence Intensity on Aerodynamic Loads of Floating Wind Turbine under Wind–Wave Coupling Effect

Tian,

Shi,

Zhang

et al. 2024

Sustainability

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“…By optimizing the tower and foundation structure, the impact toughness of the tower and foundation structure can be improved, which can effectively prolong the service life of the wind power platform and reduce the maintenance cost. By optimizing the structural design of the tower and foundation, such as using more ductile materials and increasing the redundancy of the structure, the resistance of the structure to the impact of long-period waves can be improved [15]. By selecting areas with relatively small wave impacts for the installation of wind power platforms or using topography to reduce the effect of wave energy, the impact of long-period waves can be reduced [16][17].…”

Section: Introductionmentioning

confidence: 99%

Impact toughness analysis of offshore wind power structures under the influence of long-period waves

Jiang,

Wang

2024

Applied Mathematics and Nonlinear Sciences

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In this paper, the performance of offshore wind turbine structures under long-period wave impacts is investigated, and a numerical model of long-period waves is developed to simulate the wave motion and fluid seepage in the pore medium by using the VARANS equation with the OlaFlow solver, and various turbulence models such as the model, RNG model, and the VOF method is applied to capture free surfaces, which can accurately simulate wave generation, propagation, reflection, breaking, and fluid seepage in the pore medium. These methods can accurately simulate the wave generation, propagation, reflection, breaking, and fluid seepage in the pore medium, and the accuracy of the numerical simulation is verified by comparing the results with those of the physical experiment. The results show that the wind farm exhibits good impact toughness under the influence of long period waves, and its overturning stability and slip stability are better than the safety coefficient required by the specification.

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“…Nonetheless, FWTS are less mature than their bottom-fixed counterparts owing to their more complicated operating conditions and higher prices. The FWTS are subject to loads emanating from several sources, namely wave, current, wind, and, in certain locations, ice [25,26]. Although the similarities between FWTS and floating platforms in the oil and gas industry lead to a partial transfer of technology [27], there are numerous differences between the two industries, such as the presence of aerodynamic loads acting on wind turbines, which significantly affect the dynamics of FWTS and give rise to several new technical challenges [25,28].…”

Section: Introductionmentioning

confidence: 99%

A Review of Numerical and Physical Methods for Analyzing the Coupled Hydro–Aero–Structural Dynamics of Floating Wind Turbine Systems

Maali Amiri,

Shadman,

Estefen

2024

JMSE

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Recently, more wind turbine systems have been installed in deep waters far from the coast. Several concepts of floating wind turbine systems (FWTS) have been developed, among which, the semi-submersible platform—due to its applicability in different water depths, good hydrodynamic performance, and facility in the installation process—constitutes the most explored technology compared to the others. However, a significant obstacle to the industrialization of this technology is the design of a cost-effective FWTS, which can be achieved by optimizing the geometry, size, and weight of the floating platform, together with the mooring system. This is only possible by selecting a method capable of accurately analyzing the FWTS-coupled hydro–aero–structural dynamics at each design stage. Accordingly, this paper provides a detailed overview of the most commonly coupled numerical and physical methods—including their basic assumptions, formulations, limitations, and costs used for analyzing the dynamics of FWTS, mainly those supported by a semi-submersible—to assist in the choice of the most suitable method at each design phase of the FWTS. Finally, this article discusses possible future research directions to address the challenges in modeling FWTS dynamics that persist to date.

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Numerical study of an ice-offshore wind turbine structure interaction with the pile-soil interaction under stochastic wind loads

Cited by 12 publications

References 22 publications

Effect of Turbulence Intensity on Aerodynamic Loads of Floating Wind Turbine under Wind–Wave Coupling Effect

Effect of Turbulence Intensity on Aerodynamic Loads of Floating Wind Turbine under Wind–Wave Coupling Effect

Impact toughness analysis of offshore wind power structures under the influence of long-period waves

A Review of Numerical and Physical Methods for Analyzing the Coupled Hydro–Aero–Structural Dynamics of Floating Wind Turbine Systems

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