Articles | Volume 5, issue 2
Wind Energ. Sci., 5, 721–743, 2020
https://doi.org/10.5194/wes-5-721-2020

Special issue: Wind Energy Science Conference 2019

Wind Energ. Sci., 5, 721–743, 2020
https://doi.org/10.5194/wes-5-721-2020

Research article 15 Jun 2020

Research article | 15 Jun 2020

Is the Blade Element Momentum theory overestimating wind turbine loads? – An aeroelastic comparison between OpenFAST's AeroDyn and QBlade's Lifting-Line Free Vortex Wake method

Sebastian Perez-Becker et al.

Model code and software

OpenFAST OpenFAST https://github.com/OpenFAST/openfast

QBlade QBlade https://sourceforge.net/projects/qblade

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Short summary
Aeroelastic design load calculations play a key role in determining the design loads of the different wind turbine components. This study compares load estimations from calculations using a Blade Element Momentum aerodynamic model with estimations from calculations using a higher-order Lifting-Line Free Vortex Wake aerodynamic model. The paper finds and explains the differences in fatigue and extreme turbine loads for power production simulations that cover a wide range of turbulent wind speeds.