scholarly journals Analysis of the DANAERO wind turbine field database to assess the importance of different state‐of‐the‐art blade element momentum (BEM) correction models

2021 ◽  
Author(s):  
Thomas Potentier ◽  
Caroline Braud ◽  
Emmanuel Guilmineau ◽  
Arthur Finez ◽  
Colin Le Bourdat
Keyword(s):  
Wind Turbine ◽  
State Of The Art ◽  
Field Database ◽  
Blade Element

State of the art in wind turbine aerodynamics and aeroelasticity

2006 ◽  
Vol 42 (4) ◽  
pp. 285-330 ◽  
Author(s):  
M.O.L. Hansen ◽  
J.N. Sørensen ◽  
S. Voutsinas ◽  
N. Sørensen ◽  
H.Aa. Madsen
Keyword(s):  
Wind Turbine ◽  
State Of The Art ◽  
Wind Turbine Aerodynamics

scholarly journals State of the art in fatigue modelling of composite wind turbine blades

2018 ◽  
Vol 117 ◽  
pp. 230-245 ◽  
Author(s):  
Clemence Rubiella ◽  
Cyrus A. Hessabi ◽  
Arash Soleiman Fallah
Keyword(s):  
Wind Turbine ◽  
State Of The Art ◽  
Turbine Blades ◽  
Wind Turbine Blades

scholarly journals Modeling and simulation of forces applied to the horizontal axis wind turbine rotors by the vortex method coupled with the method of the blade element

2021 ◽  
Vol 12 (1) ◽  
pp. 413
Author(s):  
Ibtissem Barkat ◽  
Abdelouahab Benretem ◽  
Fawaz Massouh ◽  
Issam Meghlaoui ◽  
Ahlem Chebel
Keyword(s):  
Wind Turbine ◽  
Wind Turbines ◽  
Wind Farms ◽  
Vortex Method ◽  
Operating Conditions ◽  
Horizontal Axis ◽  
Rotor Blades ◽  
Good Representation ◽  
Horizontal Axis Wind Turbine ◽  
Blade Element

This article aims to study the forces applied to the rotors of horizontal axis wind turbines. The aerodynamics of a turbine are controlled by the flow around the rotor, or estimate of air charges on the rotor blades under various operating conditions and their relation to the structural dynamics of the rotor are critical for design. One of the major challenges in wind turbine aerodynamics is to predict the forces on the blade as various methods, including blade element moment theory (BEM), the approach that is naturally adapted to the simulation of the aerodynamics of wind turbines and the dynamic and models (CFD) that describes with fidelity the flow around the rotor. In our article we proposed a modeling method and a simulation of the forces applied to the horizontal axis wind rotors turbines using the application of the blade elements method to model the rotor and the vortex method of free wake modeling in order to develop a rotor model, which can be used to study wind farms. This model is intended to speed up the calculation, guaranteeing a good representation of the aerodynamic loads exerted by the wind.

Active vibration suppression of elastic blade structure: Using a novel magnetorheological layer patch

2018 ◽  
Vol 29 (19) ◽  
pp. 3792-3803 ◽  
Author(s):  
Fevzi Cakmak Bolat ◽  
Selim Sivrioglu
Keyword(s):  
Wind Turbine ◽  
Vibration Suppression ◽  
State Space Model ◽  
Interaction Model ◽  
Parametric Uncertainty ◽  
Small Scale ◽  
Aerodynamic Load ◽  
Active Vibration Suppression ◽  
Active Vibration ◽  
Blade Element

This research study proposes a new active control structure to suppress vibrations of a small-scale wind turbine blade with attached magnetorheological fluid patch actuated by an electromagnet. The blade structure is manufactured by an aluminum extrusion machine considering the airfoil data of SH3055 which is designed for use on a small wind turbine. An interaction model between the magnetorheological patch and the electromagnetic actuator is derived and a force characterization is realized. A norm-based multiobjective H2/ H∞ controller is designed using the state-space model of the elastic blade element. The H2/ H∞ controller is experimentally implemented under the steady-state aerodynamic load conditions. The results of experiments show that the magnetorheological layer patch is effective for suppressing vibrations of the blade structure and robust against parametric uncertainty.

scholarly journals Evaluation of Tip Loss Corrections to AD/NS Simulations of Wind Turbine Aerodynamic Performance

2019 ◽  
Vol 9 (22) ◽  
pp. 4919 ◽  
Author(s):  
Wei Zhong ◽  
Tong Guang Wang ◽  
Wei Jun Zhu ◽  
Wen Zhong Shen
Keyword(s):  
Wind Turbine ◽  
Wind Farm ◽  
Relative Difference ◽  
Superior Performance ◽  
Navier Stokes ◽  
Special Focus ◽  
Actuator Disc ◽  
Blade Tip ◽  
Blade Loads ◽  
Blade Element

The Actuator Disc/Navier-Stokes (AD/NS) method has played a significant role in wind farm simulations. It is based on the assumption that the flow is azimuthally uniform in the rotor plane, and thus, requires a tip loss correction to take into account the effect of a finite number of blades. All existing tip loss corrections were originally proposed for the Blade-Element Momentum Theory (BEMT), and their implementations have to be changed when transplanted into the AD/NS method. The special focus of the present study is to investigate the performance of tip loss corrections combined in the AD/NS method. The study is conducted by using an axisymmetric AD/NS solver to simulate the flow past the experimental NREL Phase Ⅵ wind turbine and the virtual NREL 5MW wind turbine. Three different implementations of the widely used Glauert tip loss function F are discussed and evaluated. In addition, a newly developed tip loss correction is applied and compared with the above implementations. For both the small and large rotors under investigation, the three different implementations show a certain degree of difference to each other, although the relative difference in blade loads is generally no more than 4%. Their performance is roughly consistent with the standard Glauert correction employed in the BEMT, but they all tend to make the blade tip loads over-predicted. As an alternative method, the new tip loss correction shows superior performance in various flow conditions. A further investigation into the flow around and behind the rotors indicates that tip loss correction has a significant influence on the velocity development in the wake.

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