TY - JOUR
T1 - A Combined Potential Flow-BEM Model to Study The Tower Shadow Effect in Wind Turbines
AU - Ghandour, Ali
AU - De Troyer, Tim
AU - Runacres, Mark
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
Copyright:
Copyright 2022 Elsevier B.V., All rights reserved.
PY - 2022/8/30
Y1 - 2022/8/30
N2 - This paper aims to improve the understanding of the wind turbine tower shadow effect by developing a model that combines potential flow and blade-element momentum theory. The change in the flow field due to the presence of the tower is discussed in detail, together with the resulting variations in the aerodynamic forces acting on the rotating blades, as well as the effect on the output power and the blade root bending moment. The tower shadow effect is not only due to the change in wind speed but also to the change in angle of attack. A one-dimensional description of the flow field is therefore bound to be inadequate. The impact of the tower diameter and blade-tower clearance on the rotor power and blade root bending moment can be expressed as a quadratic function of a non-dimensional parameter. Apart from a mild Reynolds-number effect, the results presented are independent of turbine size.
AB - This paper aims to improve the understanding of the wind turbine tower shadow effect by developing a model that combines potential flow and blade-element momentum theory. The change in the flow field due to the presence of the tower is discussed in detail, together with the resulting variations in the aerodynamic forces acting on the rotating blades, as well as the effect on the output power and the blade root bending moment. The tower shadow effect is not only due to the change in wind speed but also to the change in angle of attack. A one-dimensional description of the flow field is therefore bound to be inadequate. The impact of the tower diameter and blade-tower clearance on the rotor power and blade root bending moment can be expressed as a quadratic function of a non-dimensional parameter. Apart from a mild Reynolds-number effect, the results presented are independent of turbine size.
UR - http://www.scopus.com/inward/record.url?scp=85138441807&partnerID=8YFLogxK
U2 - https://doi.org/10.1016/j.jweia.2022.105131
DO - https://doi.org/10.1016/j.jweia.2022.105131
M3 - Article
VL - 229
JO - Journal of Wind Engineering & Industrial Aerodynamics
JF - Journal of Wind Engineering & Industrial Aerodynamics
SN - 0167-6105
M1 - 105131
ER -