Research on the dynamical responses of H-type floating VAWT considering the rigid-flexible coupling effect

Deng, Wanru; Yu, Yang; Liu, Liqin; Guo, Ying; Zhao, Huabin

doi:10.1016/j.jsv.2019.115162

Cited by 16 publications

(5 citation statements)

References 19 publications

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“…In fact, there exists another important issue in the investigations of FOWTs, which is to calculate the deformations and stresses on the slenderer structures, such as blades and tower. Although this effect is not included in our present simulations, an aero-hydro-elastic numerical model based on Kane's equation is being developed, and it has been adopted to perform simulations on floating vertical axis wind turbines [49,50]. In future studies, this coupling in-house code will be developed to study FOWT dynamic performances.…”

Section: Discussionmentioning

confidence: 99%

Dynamic Response of SPAR-Type Floating Offshore Wind Turbine under Wave Group Scenarios

Liu

2022

Energies

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Numerical simulations are performed within the time domain to investigate the dynamic behaviors of an SPAR-type FOWT under wave group conditions. Towards this goal, the OC3 Hywind SPAR-type FOWT is adopted, and a JONSWAP (Joint North Sea Wave Project)-based wave group is generated by the envelope amplitude approach. The FOWT motion under wave group conditions, as well as the aerodynamic, hydrodynamic, and mooring performances, is simulated by our established in-house code. The rotating blades are modelled by the blade element momentum theory. The wave-body interaction effect is calculated by the three-dimensional potential theory. The mooring dynamics are also taken into consideration. According to the numerical results, the SPAR buoy motions are slightly increased by the wave group, while the heave motion is significantly amplified. Both the aerodynamic performance and the mooring tension are also influenced by the wave group. Furthermore, the low-frequency resonant response could be more easily excited by the wave group.

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Section: Discussionmentioning

confidence: 99%

Dynamic Response of SPAR-Type Floating Offshore Wind Turbine under Wave Group Scenarios

Liu

2022

Energies

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“…VAWT design should consider both load of operation and load of severity conditions, with ultimate strength and structural integrity being crucial factors. The blade's structural design should consider dynamic stiffening and be made from short fiber composite material (Deng et al, 2020;Wanru et al, 2022;Bedon et al, 2013). Design load cases depend on operational and external conditions, with requirements like IEC61400-1 and Germanischer Lloyd (GL) unsuitable for VAWTs (Commission, 2019;Lloyd, 2003).…”

Section: Nomenclaturementioning

confidence: 99%

Structural Design Optimization of Laminated Composites for Vertical Axis Wind Turbine Blades: A Single Objective Approach

Geneid,

Atia,

Elsabbagh

et al. 2024

Preprint

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Abstract. Vertical-axis wind turbines are considered a proper solution for today's energy needs. To make it affordable for domestic usage, this requires a reduction in the turbine cost, blade weight, and an increase in blade life. The challenge in VAWT blade design is fatigue and blade life prediction, besides surviving centrifugal force and repeated load pattern effects. The paper focuses on the blade structure modelling and optimization to assess the design for integrity, fatigue, life, sustainability, and cost. The presented model can examine varied materials, including new biodegradable materials, while reducing computation time and resources. The structure analysis is based on classical lamination theory (CLT) and polynomial failure theory (Tsai-Hill and Tsai-Wu). Fatigue analysis and blade life are based on damage evaluation using Miner’s rule for loading steps, evaluated stresses and strains, and loading cases. The approximation model simplifies the dynamic and fatigue analysis procedures to make the model integrable with the optimization method. The beam element method is used to approximate the fundamental frequencies of blade structure. The genetic algorithm is the optimization method used for single objective function, non-linear constrained, mixed integer problem. Decision variables vary according to the scope of optimization which includes the five main composite structure parameters: lamina thickness, orientation, volume fraction, and material selection for resin and fiber. However, in the case of pre-defined laminae materials, only the thickness, orientation, and selection index are used. The commercial finite element software ANSYS is used to validate results.

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“…The fender system in the new installation method for floating offshore wind turbines, which is available in [11], showed a reduction effect on relative horizontal and vertical displacements, relative alignment, and relative stability by approximately 78%, 64%, and 32%, respectively. The elasticity of the blade and tower has little effect on the dynamic response of floater, and the dynamic equation of floating VAWTs based on multi-body kinematics and dynamics theory considering rigid-flexible aerodynamic coupling is available in [12]. For large blade strains, the FSI model can more accurately represent turbine performance than CFD, thus compromising aerodynamic performance and structural robustness [13].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of a Flexible Multi-Body in Large Wind Turbines: A Review

Xue

Zhang

2023

Sustainability

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Dynamic response of flexible multi-body large wind turbines has been quickly growing in recent years. With the new normal economic policy, the economy of China is developing innovatively and stably. New energy development and utilization is an important strategy for people’s lives and economic development around the world. It is feasible to analyze from a broad perspective. In particular, the development and application of wind power is affecting the economic development of industry to a certain extent. Persistent and significant large wind turbines have cast concern over the prospects of wind power technology, and a comprehensive development potential of wind power technology has been analyzed its potential use in the future. The multi-body dynamics method can better analyze and describe the impact of flexible blade elastic deformation on motion characteristics and provides a practical analysis method for the aeroelastic stability analysis and control system design of wind turbines.

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Research on the dynamical responses of H-type floating VAWT considering the rigid-flexible coupling effect

Cited by 16 publications

References 19 publications

Dynamic Response of SPAR-Type Floating Offshore Wind Turbine under Wave Group Scenarios

Dynamic Response of SPAR-Type Floating Offshore Wind Turbine under Wave Group Scenarios

Structural Design Optimization of Laminated Composites for Vertical Axis Wind Turbine Blades: A Single Objective Approach

Dynamic Response of a Flexible Multi-Body in Large Wind Turbines: A Review

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