Next Article in Journal
Hybrid Forecasting Model for Short-Term Wind Power Prediction Using Modified Long Short-Term Memory
Next Article in Special Issue
Aerodynamic Analysis of a Two-Bladed Vertical-Axis Wind Turbine Using a Coupled Unsteady RANS and Actuator Line Model
Previous Article in Journal
Analysis and Modeling of the Wear-Out Process of a Lithium-Nickel-Manganese-Cobalt Cell during Cycling Operation under Constant Load Conditions
Previous Article in Special Issue
Large Eddy Simulation of an Onshore Wind Farm with the Actuator Line Model Including Wind Turbine’s Control below and above Rated Wind Speed
Open AccessArticle

A Modified Free Wake Vortex Ring Method for Horizontal-Axis Wind Turbines

1
Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands
2
Wind Energy Group, Shanghai Electric Group Company Limited, Shanghai 200233, China
*
Author to whom correspondence should be addressed.
Energies 2019, 12(20), 3900; https://doi.org/10.3390/en12203900
Received: 5 August 2019 / Revised: 7 October 2019 / Accepted: 10 October 2019 / Published: 15 October 2019
(This article belongs to the Special Issue Recent Advances in Aerodynamics of Wind Turbines)
A modified free-wake vortex ring model is proposed to compute the dynamics of a floating horizontal-axis wind turbine, which is divided into two parts. The near wake model uses a blade bound vortex model and trailed vortex model, which is developed based on vortex filament method with straight lifting lines assumption. By contrast, the far wake model is based on the vortex ring method. The proposed model is a good compromise between accuracy and computational cost, for example when compared with more complex vortex methods. The present model is used to assess the influence of floating platform motions on the performance of a horizontal-axis wind turbine rotor. The results are validated on the 5 MW NREL rotor and compared with other aerodynamic models for the same rotor subjected to different platform motions. The results show that the proposed method is reliable. In addition, the proposed method is less time consuming and has similar accuracy when comparing with more advanced vortex based methods. View Full-Text
Keywords: free wake vortex method; horizontal-axis wind turbine; floating wind energy; aerodynamics free wake vortex method; horizontal-axis wind turbine; floating wind energy; aerodynamics
Show Figures

Graphical abstract

MDPI and ACS Style

Dong, J.; Viré, A.; Ferreira, C.S.; Li, Z.; van Bussel, G. A Modified Free Wake Vortex Ring Method for Horizontal-Axis Wind Turbines. Energies 2019, 12, 3900.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop