Articles | Volume 6, issue 6
Wind Energ. Sci., 6, 1341–1361, 2021
Wind Energ. Sci., 6, 1341–1361, 2021
Research article
01 Nov 2021
Research article | 01 Nov 2021

Experimental analysis of radially resolved dynamic inflow effects due to pitch steps

Frederik Berger et al.

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Cited articles

Berger, F. and Kühn, M.: Experimental investigation of dynamic inflow effects with a scaled wind turbine in a controlled wind tunnel environment, J. Phys.: Conf. Ser., 1037, 052017,, 2018. a
Berger, F., Kröger, L., Onnen, D., Petrović, V., and Kühn, M.: Scaled wind turbine setup in a turbulent wind tunnel, J. Phys.: Conf. Ser., 1104, 012026,, 2018. a
Berger, F., Höning, L., Herráez, I., and Kühn, M.: Comparison of a radially resolved dynamic inflow pitch step experiment to mid-fidelity simulations and BEM, J. Phys.: Conf. Ser., 1618, 052055,, 2020. a
Berger, F., Onnen, D., Schepers, J, G., and Kühn, M.: Dataset – Radially resolved dynamic inflow pitch step experiment in wind tunnel, Zenodo [data set],, 2021. a
Boorsma, K., Schepers, J. G., Gomez-Iradi, S., Herraez, I., Lutz, T., Weihing, P., Oggiano, L., Pirrung, G., Madsen, H. A., Rahimi, H., and Schaffarczyk, P.: Final report of IEA Task 29, Mexnext (Phase 3), Tech. Rep. ECN-E–18-003, Energy research Center of the Netherlands, Petten, 2018. a, b
Short summary
Dynamic inflow denotes the unsteady aerodynamic response to fast changes in rotor loading and leads to load overshoots. We performed a pitch step experiment with MoWiTO 1.8 in the large wind tunnel of ForWind – University of Oldenburg. We measured axial and tangential inductions with a recent method with a 2D-LDA system and performed load and wake measurements. These radius-resolved measurements allow for new insights into the dynamic inflow phenomenon.