Effect of coupled platform pitch-surge motions on the aerodynamic characters of a horizontal floating offshore wind turbine

Guo, Yize; Wang, Xiaodong; Mei, Yuanhang; Ye, Zhaoliang; Guo, Xiaojun

doi:10.1016/j.renene.2022.06.108

Cited by 15 publications

(2 citation statements)

References 18 publications

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“…Under the influence of complex platform movement, the wind turbine rotor may experience complex changes in aerodynamic characteristics. Guo et al [33] studied the influence of different platform movements on the aerodynamic characteristics of the wind turbine and found that the relative wind speed of the rotor is the key factor affecting the thrust and output power. Arabgolarcheh et al investigated the changes in the near-field wake [19] and far-field wake [34] of FOWTs under the influence of different platform movements based on ALM, but they did not consider the coupled case of different movement combinations.…”

Section: Introductionmentioning

confidence: 99%

Study on the near Wake Aerodynamic Characteristics of Floating Offshore Wind Turbine under Combined Surge and Pitch Motion

Leng,

Cai,

Zhao

et al. 2024

Energies

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Floating offshore wind turbines (FOWTs) may experience six degree of freedom (DoF) movements under the influence of environmental conditions. Different combinations of platform movements with the same amplitude and frequency may have distinct influences on the aerodynamic characteristics of the wind turbine. In this study, a detailed, full-scale CFD model of NREL 5 MW wind turbine is developed to investigate the specific aerodynamic and near wake characteristics under the influence of surge, pitch, and coupled surge–pitch platform motion based on the OpenFOAM tool box. It is clearly noted that different platform movements led to varying relative velocities of the blade, which affected the aerodynamic performance of wind turbines such as thrust, torque, and angle of attack (AOA). On the other hand, when the wind turbine was subjected to combined surge–pitch motion with the same phase, the wake velocity field fluctuated greatly, and the velocity at the center of the wake even exceeded the free flow velocity. Moreover, the platform movement affected the gap between the shed vortices. When the wind turbine moved forward, the gap between the vortices increased, while when the wind turbine moved backward, the gap between the vortices decreased or even converged, resulting in vortex–vortex interaction.

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Section: Introductionmentioning

confidence: 99%

Study on the near Wake Aerodynamic Characteristics of Floating Offshore Wind Turbine under Combined Surge and Pitch Motion

Leng,

Cai,

Zhao

et al. 2024

Energies

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show abstract

“…Centrifugal pumps account for over 80% of ship pumps and are used for ship ballast balance, pipeline heat exchange circulation, ship safety, fire protection, domestic water supply and drainage systems. The pumps on board ships are affected by the ocean environment, causing pitch motion, and their inner flow is subjected to additional swing forces, resulting in more turbulent flow and more intense flow excitation which induce the unsteady vibration of pump systems [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Research on the Performance Characteristics and Unsteady Flow Mechanism of a Centrifugal Pump under Pitch Motion

Yuan,

Gong,

Wang

et al. 2023

Water

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Pitch motion is the key factor affecting the performance characteristics of centrifugal pumps on board ships and exacerbates hydraulic excitation to induce the unsteady vibration of pump units. A hydraulic test platform with swing motion is established to explore the effects of pitch motion on a pump’s performance characteristics. An obvious hump zone exists in the head characteristic curve in the low-flow-rate condition due to the pitch motion. The pump head in the shut-off condition has a significant decrease due to the pitch motion, compared to the static state. The head decrease gradually increases as the maximum pitch angle increases or the pitch period shortens. Specifically, the head in the rated flow condition decreases by 6.3 % to reach a minimum at the maximum pitch angle of 20 degrees in a period of 5 s. Based on a multiple-reference coordinate system, a large eddy simulation with a shear-modified eddy viscosity model is employed to simulate inner flow characteristics under the influence of pitch motion. A distinct vortex flow appears near the blade suction surface and becomes increasingly turbulent as the pitch period shortens. The pitch motion intensifies the unsteady stretching and deformation of vortices. The periodic variations in fluid-induced pressure over time present parabolic features, and the amplitude in the frequency domain reaches its maximum value within a pitch period of 5 s.

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Impact of Various Coupled Motions on the Aerodynamic Performance of a Floating Offshore Wind Turbine Within the Wind–Rain Field

Wang,

Guo,

Xia

et al. 2024

J. Marine. Sci. Appl.

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Effect of coupled platform pitch-surge motions on the aerodynamic characters of a horizontal floating offshore wind turbine

Cited by 15 publications

References 18 publications

Study on the near Wake Aerodynamic Characteristics of Floating Offshore Wind Turbine under Combined Surge and Pitch Motion

Study on the near Wake Aerodynamic Characteristics of Floating Offshore Wind Turbine under Combined Surge and Pitch Motion

Research on the Performance Characteristics and Unsteady Flow Mechanism of a Centrifugal Pump under Pitch Motion

Impact of Various Coupled Motions on the Aerodynamic Performance of a Floating Offshore Wind Turbine Within the Wind–Rain Field

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