Results 41 to 50 of about 13,230 (227)
Leading effect for wind turbine wake models
Renewable Energy, 2023 As wind energy expands worldwide, the demand of reliable, fast, cost-efficient wind turbine wake models is growing. This is a significant challenge as wind turbines face various inflow conditions, that include turbulence, inhomogeneities/instationarities and upstream wakes.
Ingrid Neunaber +2 more
openaire +3 more sources
Field Measurements of Wind Turbine Wakes with Lidars [PDF]
Journal of Atmospheric and Oceanic Technology, 2013 AbstractField measurements of the wake flow produced from a 2-MW Enercon E-70 wind turbine were performed using three scanning Doppler wind lidars. A GPS-based technique was used to determine the position of the wind turbine and the wind lidar locations, as well as the direction of the laser beams.
Iungo G. Valerio +2 more
openaire +2 more sources
MULTIFRACTAL ANALYSIS OF A WAKE FOR A SINGLE WIND TURBINE [PDF]
Topical Problems of Fluid Mechanics 2017, 2017 Wind energy is an important component of renewable energy sources. Studying of turbulent wakes for wind turbines and interactions with Atmospheric Boundary Layer is an urgent problem. The theory of chaos and fractal geometry with some research in fluid dynamics will change profoundly the scope of complex scale to scale transport in theory of turbulence,
Strijhak, Sergei +2 more
openaire +2 more sources
Bidirectional wakes over complex terrain using SCADA data and wake models [PDF]
Wind Energy ScienceWe investigate bidirectional wake effects between two wind turbines of the same type in a hill region in northern Japan using supervisory control and data acquisition (SCADA) data and validate the simulated wakes using 12 wake models. The extent to which
N. Sasanuma +6 more
doaj +1 more source
Power and Flow Analysis of Axial Induction Control in an Array of Model-Scale Wind Turbines
Energies, 2022 As research on wind energy has progressed, it has broadened from a focus on the wind turbine to include the entire wind farm. In particular, methods to mitigate the negative effects of upstream wakes on downstream turbines have received significant ...
Daniel Houck, Edwin A. Cowen
doaj +1 more source
Blade–wake interactions in cross-flow turbines [PDF]
International Journal of Marine Energy, 2015 This paper presents analytical bounds for blade–wake interaction phenomenona occurring in rotating cross-flow turbines for wind and tidal energy generation (e.g. H rotors, Darrieus or vertical axis). Limiting cases are derived for one bladed turbines and extended to the more common three bladed configuration.
Ferrer Vaccarezza, Esteban +1 more
openaire +2 more sources
Energies, 2021 This study investigates the wake interaction of four full-scale three-bladed tidal turbines with different ambient turbulence conditions, in straight and yawed flows.
Myriam Slama +4 more
doaj +1 more source
An Analytical Model for Wind Turbine Wakes under Pressure Gradient
Energies, 2022 In this study, we present an analytical modeling framework for wind turbine wakes under an arbitrary pressure gradient imposed by the base flow. The model is based on the conservation of the streamwise momentum and self-similarity of the wake velocity ...
Arslan Salim Dar, Fernando Porté-Agel
doaj +1 more source
Analytical model for the power–yaw sensitivity of wind turbines operating in full wake [PDF]
Wind Energy Science, 2020 Wind turbines are designed to align themselves with the incoming wind direction. However, turbines often experience unintentional yaw misalignment, which can significantly reduce the power production.
J. Liew, A. M. Urbán, S. J. Andersen
doaj +1 more source
Remote Sensing, 2019 Accurate prediction of wind turbine wakes is important for more efficient design and operation of wind parks. Volumetric wake measurements of nacelle-mounted Doppler lidars are used to characterize the wake of a full-scale wind turbine and to validate an
Peter Brugger +4 more
doaj +1 more source