Mitigation of coupled wind-wave-earthquake responses of a 10 MW fixed-bottom offshore wind turbine

Yang, Yang; Bashir, Musa; Li, Chun; Michailides, Constantine; Wang, Jin

doi:10.1016/j.renene.2020.05.077

Cited by 50 publications

(8 citation statements)

References 20 publications

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“…Most studies had overlooked complicated boundary constraints, flow characteristics, and complex effects such as fluid, so vortex-induced vibration dynamic models were created to simplify, causing an error in the turbine operation in the process of impact vibration measurement. The multiphase flow with complex constraint boundary vortexinduced vibration response modeling technology and method were also flawed [100][101][102]. As a result, improving dynamic modeling technology and the propagating mechanisms of vortex-induced vibration at complicated boundary restrictions is critical.…”

Section: Vortex-induced Vibrationmentioning

confidence: 99%

Gravitational Surface Vortex Formation and Suppression Control: A Review from Hydrodynamic Characteristics

Zheng

et al. 2022

Processes

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The energy-conversion stability of hydropower is critical to satisfy the growing demand for electricity. In low-head hydropower plants, a gravitational surface vortex is easily generated, which causes irregular shock vibrations that damage turbine performance and input-flow stability. The gravitational surface vortex is a complex fluid dynamic problem with high nonlinear features. Here, we thoroughly investigate its essential hydrodynamic properties, such as Ekman layer transport, heat/mass transfer, pressure pulsation, and vortex-induced vibration, and we note some significant scientific issues as well as future research directions and opportunities. Our findings show that the turbulent Ekman layer analytical solution and vortex multi-scale modeling technology, the working condition of the vortex across the scale heat/mass transfer mechanism, the high-precision measurement technology for high-speed turbulent vortexes, and the gas–liquid–solid three-phase vortex dynamics model are the main research directions. The vortex-induced vibration transition mechanism of particle flow in complex restricted pipelines, as well as the improvement of signal processing algorithms and a better design of anti-spin/vortex elimination devices, continue to draw attention. The relevant result can offer a helpful reference for fluid-induced vibration detection and provide a technical solution for hydropower energy conversion.

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Section: Vortex-induced Vibrationmentioning

confidence: 99%

Gravitational Surface Vortex Formation and Suppression Control: A Review from Hydrodynamic Characteristics

Zheng

et al. 2022

Processes

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“…Figure 3: Discrete model and mesh properties of the 10 MW tripod [47] Main advantages of a tripod include being light weight and of high rigidity;…”

Section: Tripodmentioning

confidence: 99%

Dynamic analysis of 10 MW offshore wind turbines with different support structures subjected to earthquake loadings

et al. 2022

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“…According to the soil parameters in Ref (Yang et al, 2020)., the site soil conditions shown in Figure 7 are adopted in the monopile OWT. Soil conditions are designed as sandy soil with a depth of 45 m. The internal friction angle is 36°, and the saturation weight is selected as 20 kN/m 3 .…”

Section: Pile-soil Interaction Parametersmentioning

confidence: 99%

Dynamic analysis of offshore wind turbines subjected to the combined wind and ice loads based on the cohesive element method

et al. 2022

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Ice loads are an important and decisive factor for the safe operation of offshore wind turbines (OWTs). In severe environment load cases, it shall lead to prominent ice-induced vibration and ice-induced fatigue failure of OWT structures. Based on the cohesive element method (CEM) and considering the pile–soil interaction used by nonlinear distributed springs, the full interaction model of the ice and monopile OWT structure with an ice-breaking cone in a cold sea region is established in this study. Furthermore, the Tsai-Wu failure criterion and the empirical failure formula of maximum plastic failure strain are used to describe the mechanical behavior of ice bending failure in the collision simulation tool LS-DYNA, and the dynamic ice loads under different ice velocities and cone angles are statistically analyzed. Finally, according to the interaction process between sea ice and OWT containing the ice-breaking cone, the dynamic response of OWT under the combined wind and ice loads is studied, and the most reasonable ice-breaking cone angle is determined. The results show that the method adopted in this paper can well simulate the bending failure process of sea ice. Concurrently, the cone angle has a significant impact on the dynamic response and damage of the OWT, and the recommended optimal cone angle is 60.

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Mitigation of coupled wind-wave-earthquake responses of a 10 MW fixed-bottom offshore wind turbine

Abstract: The version presented here may differ from the published version or from the version of the record. Please see the repository URL above for details on accessing the published version and note that access may require a subscription.

Cited by 50 publications

References 20 publications

Gravitational Surface Vortex Formation and Suppression Control: A Review from Hydrodynamic Characteristics

Gravitational Surface Vortex Formation and Suppression Control: A Review from Hydrodynamic Characteristics

Dynamic analysis of 10 MW offshore wind turbines with different support structures subjected to earthquake loadings

Dynamic analysis of offshore wind turbines subjected to the combined wind and ice loads based on the cohesive element method

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