Assessment of blade element momentum codes under varying turbulence levels by comparing with blade resolved computational fluid dynamics

Kim, Yusik; Madsen, Helge Aagaard; Aparicio-Sanchez, Maria; Pirrung, Georg Raimund; Lutz, Thorsten

doi:10.1016/j.renene.2020.06.006

Cited by 6 publications

(3 citation statements)

References 27 publications

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“…Kavari et al [31] merge the power-law function to BEM theory to study the effect of wind shear on the designed blade. Kim et al [32] evaluated the performance of two BEM theory techniques by comparing the results with CFD simulation at various unsteady turbulent intensities. Abutunis et al [33] integrated BEM theory into optimization techniques to improve the convergence.…”

Section: Validate Bem Methods Against Cfdmentioning

confidence: 99%

Review on validation techniques of blade element momentum method implemented in wind turbines

Abdelkhalig

Elgendi

Selim

2022

IOP Conf. Ser.: Earth Environ. Sci.

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There are two broad kinds of energy sources: renewable and non-renewable. In the renewable energy sector, significant advancements have been made in wind energy, the world’s fastest-growing renewable energy production technology. Despite this rapid development, the wind industry must still strive to ensure that any device designed for commercial use is reliable and its performance satisfies its economic projections. The critical factor in achieving this target is rotor aerodynamics because the rotor is the part that mainly reacts with the wind. When designing a wind turbine, the assessment of the aerodynamic characteristics of the blades must be accurate. Errors may result in wrong estimates of the turbines’ performance and economic projections. If experimental measurements cannot determine these characteristics, a designer will use alternative methods. Several modeling methods have proven viable solutions for design and analysis purposes, like Blade Element Momentum (BEM) methods. BEM methods analyze the aerodynamic performance of wind turbines, but it requires validation to examine the accuracy of its results. This paper highlights and reviews BEM validation techniques implemented in wind turbine aerodynamics analyses. BEM is validated against experimental data and other advanced models, namely, higher-order vortex and CFD (Computational Fluid Dynamics) models. Nevertheless, the experimental data are essential in wind turbine studies for both understanding the aerodynamic mechanisms and validating all these models.

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Section: Validate Bem Methods Against Cfdmentioning

confidence: 99%

Review on validation techniques of blade element momentum method implemented in wind turbines

Abdelkhalig

Elgendi

Selim

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…A comparison of equation (21) shows that the 3D-PSTMD can provide an additional local stifness to the OWT tower, and this means that the 3D-PSTMD can reduce the static displacement of the tower. It is worth to note that this is diferent from the traditional pendulum TMD because the 3D-PSTMD has an extra prestressed tensile force from the prestressed cables that acts directly within the topmost segment of the tower only.…”

Section: Advantages Of 3d-pstmdmentioning

confidence: 99%

“…Generalized Aerodynamic Force. According to the BEM method [21], an integral blade section may be dispersed into N elements as shown in Figure 5(a), where R is the radial length of the rotor and ω b is the angular rotation speed of the blade. Te BEM method assumes that no radial dependency exists along the blade span, and thus, the blade elements can be analyzed independently with the momentum theory.…”

Section: Aerodynamic and Hydrodynamic Loadsmentioning

confidence: 99%

Three-Dimensional Prestressed Tuned Mass Damper for Passive Vibration Control of Coupled Multiple DOFs Offshore Wind Turbine

Lei,

Liu,

Zhang

et al. 2023

Structural Control and Health Monitoring

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Large megawatts offshore wind turbine (OWT) with low natural frequency and low damping is subjected to significant vibration from wind and wave actions in its service environment. The one-dimensional prestressed tuned mass damper (PSTMD) is further extended to a 3D-PSTMD for the control of vibrations of the OWT in this paper. A multiple DOFs coupled system of turbine, blades, tower, and foundation under aerodynamic and hydrodynamic forces is considered in this study of vibration mitigation at fore-aft and side-side directions. The dynamic model is derived with the Lagrangian equation, and the superiorities of the PSTMD are proved from the perspective of theoretical analysis. Aerodynamic and hydrodynamic loads are generated with the blade element momentum (BEM) theory and Morrison equation, and the dynamic responses of different systems are computed by using the Wilson-θ method. The analysis results indicate that a damping coefficient of the 3D-PSTMD corresponding to the first vibration mode can be tuned to take up values larger than that in traditional three-dimensional pendulum (TMD) (3D-PTMD). The bidirectional vibration suppression competences of the 3D-PSTMD in the dynamic responses when under aerodynamic and hydrodynamic loads are better than those of the traditional 3D-PTMD.

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Aerodynamic modeling of wind turbine loads exposed to turbulent inflow and validation with experimental data

Bangga

Lutz

2021

Energy

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Assessment of blade element momentum codes under varying turbulence levels by comparing with blade resolved computational fluid dynamics

Cited by 6 publications

References 27 publications

Review on validation techniques of blade element momentum method implemented in wind turbines

Review on validation techniques of blade element momentum method implemented in wind turbines

Three-Dimensional Prestressed Tuned Mass Damper for Passive Vibration Control of Coupled Multiple DOFs Offshore Wind Turbine

Aerodynamic modeling of wind turbine loads exposed to turbulent inflow and validation with experimental data

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