Next Article in Journal
Study on the Mechanism of Ionic Stabilizers on Shale Gas Reservoir Mechanics in Northwestern Hunan
Next Article in Special Issue
CFD Computation of the H-Darrieus Wind Turbine—The Impact of the Rotating Shaft on the Rotor Performance
Previous Article in Journal
Analysis of Building Electricity Use Pattern Using K-Means Clustering Algorithm by Determination of Better Initial Centroids and Number of Clusters
Previous Article in Special Issue
Wake Effect of a Horizontal Axis Wind Turbine on the Performance of a Downstream Turbine
Open AccessArticle

On the Determination of the Aerodynamic Damping of Wind Turbines Using the Forced Oscillations Method in Wind Tunnel Experiments

1
Institute of Steel Construction of the RWTH Aachen, Mies-van-der-Rohe-Straße 1, 52074 Aachen, Germany
2
Center for Wind and Earthquake Engineering of the RWTH Aachen, Mies-van-der-Rohe-Straße 1, 52074 Aachen, Germany
*
Author to whom correspondence should be addressed.
Energies 2019, 12(12), 2452; https://doi.org/10.3390/en12122452
Received: 28 May 2019 / Revised: 14 June 2019 / Accepted: 17 June 2019 / Published: 25 June 2019
(This article belongs to the Special Issue Recent Advances in Aerodynamics of Wind Turbines)
The development of wind turbine technology has led to higher and larger wind turbines with a higher sensitivity to dynamic effects. One of these effects is the aerodynamic damping, which introduces favorable damping forces in oscillating wind turbines. These forces play an important role in the turbine lifetime, but have not yet been studied systematically in detail. Consequently, this paper studies the plausibility of determining the aerodynamic damping of wind turbines systematically through wind tunnel experiments using the forced oscillation method. To this end, a 1:150 scale model of a prototype wind turbine has been fabricated considering Reynolds number effects on the blades through XFOIL calculations and wind tunnel measurements of airfoil 2D-section models. The resulting tower and wind turbine models have been tested for different operation states. The tower results are approximate and show low aerodynamic damping forces that can be neglected on the safe side. The measured aerodynamic damping forces of the operating turbine are compared to existing analytic approaches and to OpenFAST simulations. The measured values, although generally larger, show good agreement with the calculated ones. It is concluded that wind tunnel forced oscillations experiments could lead to a better characterization of the aerodynamic damping of wind turbines. View Full-Text
Keywords: wind turbines; aeroelasticity; aerodynamic damping; wind tunnel tests; forced oscillations method wind turbines; aeroelasticity; aerodynamic damping; wind tunnel tests; forced oscillations method
Show Figures

Figure 1

MDPI and ACS Style

Fontecha, R.; Kemper, F.; Feldmann, M. On the Determination of the Aerodynamic Damping of Wind Turbines Using the Forced Oscillations Method in Wind Tunnel Experiments. Energies 2019, 12, 2452.

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
Back to TopTop