Articles | Volume 5, issue 2
Research article
05 May 2020
Research article |  | 05 May 2020

Investigations of aerodynamic drag forces during structural blade testing using high-fidelity fluid–structure interaction

Christian Grinderslev, Federico Belloni, Sergio González Horcas, and Niels Nørmark Sørensen

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Cited articles

Bechmann, A., Sørensen, N. N., and Zahle, F.: CFD simulations of the MEXICO rotor, Wind Energy, 14, 677–689, 2011. a
Branner, K.: Large Scale Facility, available at:, last access: March 2020. a
Galinos, C.: Aeroelastic Analysis of Olsen Wings 14, 3 m Blade – BLATIGUE Project, Technical report DTU Wind Energy I-0635(EN), DTU Wind Energy, Denmark, September 2017. a
González Horcas, S., Madsen, M. H. A., Sørensen, N. N., and Zahle, F.: Suppressing Vortex Induced Vibrations of Wind Turbine Blades with Flaps, in: Recent Advances in CFD for Wind and Tidal Offshore Turbines, editec by: Ferrer, E. and Montlaur, A., Springer International Publishing, Cham, 11–24,, 2019. a
Greaves, P. R.: Fatigue Analysis and Testing of Wind Turbine Blades, PhD thesis, Durham University, Durham, 2013. a, b, c, d
Short summary
This study focuses on coupled computational fluid and structural dynamics simulations of a dynamic structural test of a wind turbine blade, as performed in laboratories. It is found that drag coefficients used for simulations, when planning fatigue tests, underestimate air resistance to the dynamic motion that the blade undergoes during tests. If this is not corrected for, this can result in the forces applied to the blade actually being lower in reality during tests than what was planned.