Abstract
Particle image velocimetry (PIV) measurements are conducted at the trailing edge of a piezoelectric actuated airfoil in order to investigate the physical effect on the flow via high-frequency low-amplitude actuation. Furthermore the effects of large-amplitude low frequency actuation modifying the airfoil camber are investigated using aerodynamic force measurements. A statistical analysis reveals the reduction of the Reynolds stress tensor components with increasing actuation frequency up to a frequency of \(60\,\text {Hz}\). The modification of the airfoil camber allows real-time control of the desired lift. The feasibility of the designed hybrid morphing mechanism under aerodynamic loads at a Reynolds number of 218,000 was shown for both the large amplitude and the high frequent actuation.
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Acknowledgments
The authors would like to thank D. Harribey from laplace as well as C. Korbuly from imft for their help and support in realizing the present work.
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Scheller, J. et al. (2016). Experimental Investigation of a Hybrid Morphing NACA4412 Airfoil Via Time-Resolved PIV Measurements. In: Braza, M., Bottaro, A., Thompson, M. (eds) Advances in Fluid-Structure Interaction. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 133. Springer, Cham. https://doi.org/10.1007/978-3-319-27386-0_3
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DOI: https://doi.org/10.1007/978-3-319-27386-0_3
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