Results 21 to 30 of about 2,077 (252)
Blade planform design optimization to enhance turbine wake control
Wind Energy, 2022 This study considers optimizing the planform of wind turbine blades to ultimately enhance wind plant controls, namely, wake steering strategies. Adjoint‐enabled unsteady actuator line simulations are carried out to obtain gradients for optimization of ...
Jeffery Allen +4 more
doaj +1 more source
Modelling Yawed Wind Turbine Wakes: Extension of a Gaussian-Based Wake Model
Energies, 2021 Yaw-based wake steering control is a potential way to improve wind plant overall performance. For its engineering application, it is crucial to accurately predict the turbine wakes under various yawed conditions within a short time.
De-Zhi Wei, Ni-Na Wang, De-Cheng Wan
doaj +1 more source
The curled wake model: a three-dimensional and extremely fast steady-state wake solver for wind plant flows [PDF]
Wind Energy Science, 2021 Wind turbine wake models typically require approximations, such as wake superposition and deflection models, to accurately describe wake physics. However, capturing the phenomena of interest, such as the curled wake and interaction of multiple wakes, in ...
L. A. Martínez-Tossas +7 more
doaj +1 more source
Why the Coriolis force turns a wind farm wake clockwise in the Northern Hemisphere [PDF]
Wind Energy Science, 2017 The interaction between the Coriolis force and a wind farm wake is investigated by Reynolds-averaged Navier–Stokes simulations, using two different wind farm representations: a high roughness and 5 × 5 actuator disks.
M. P. van der Laan, N. N. Sørensen
doaj +1 more source
A simple vortex model applied to an idealized rotor in sheared inflow [PDF]
Wind Energy Science, 2023 A simple analytical vortex model is presented and used to study an idealized wind turbine rotor in uniform and sheared inflow, respectively. Our model predicts that 1D momentum theory should be applied locally when modelling a non-uniformly loaded rotor ...
M. Gaunaa, N. Troldborg, E. Branlard
doaj +1 more source
Numerical Study on the Yaw Control for Two Wind Turbines under Different Spacings
Applied Sciences, 2022 In this study, the large eddy simulation method and the actuator line model are used to investigate the wake redirection of two turbines. Different turbine spacings and yaw-based control of the upstream turbine are considered.
Zhiqiang Xin +4 more
doaj +1 more source
Effect of the vertical wake deflection on the response of a 12MW semisubmersible FWT
Journal of Physics: Conference Series, 2023 Abstract The need to understand the interaction of floating wind turbines operating in the marine boundary layer with other surrounding turbines is of increasing importance as wind farms and rotor sizes get larger. For low wind speed conditions, the wake deflects upwards due to the floating wind turbine built-in rotor tilt and the ...
I Rivera-Arreba +2 more
openaire +1 more source
Vertical wake deflection for floating wind turbines by differential ballast control [PDF]
, 2021 Abstract. This paper presents a feasibility analysis of vertical wake steering for floating turbines by differential ballast control. This new concept is based on the idea of pitching the floater with respect to the water surface, thereby achieving a desired tilt of the turbine rotor disk.
Emmanouil M. Nanos +3 more
openaire +1 more source
Theoretical and Applied Mechanics Letters, 2021 Wind-tunnel experiments were performed to study the effect of favorable and adverse constant pressure gradients (PG) from local changes in the topography right downwind of a model wind turbine. Particle image velocimetry was used to characterize the near
Tengfei Cai +3 more
doaj +1 more source
Validation of Aeroelastic Actuator Line for Wind Turbine Modelling in Complex Flows
Frontiers in Energy Research, 2022 The actuator line method is a widely used technique to model wind turbines in computational fluid dynamics, as it significantly reduces the required computational expense in comparison to simulations using geometrically resolved blades.
Emily L. Hodgson +6 more
doaj +1 more source