Abstract
In this study, the effect of chordwise flexibility has been investigated experimentally for a plunging foil. A Digital Particle Image Velocimetry (DPIV) system is used to determine instantaneous velocity and vorticity fields around and in the near-wake of the wings in conjunction with simultaneous direct force/moment measurements. The aerodynamic/hydrodynamic performance is studied for rigid and flexible wings undergoing plunge motion at different amplitudes and frequencies in a freestream of Re = 10 000. The thrust coefficient (\(C_T\)), the power input coefficient (\(C_P\)) and the efficiency (\(\eta \)) values are also obtained and linked with the flexibility, trailing edge motion and flow structures in the near-wake.
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Acknowledgments
The authors acknowledge the funding provided by the Scientific and Technological Research Council of Turkey (TUBITAK) Grant 112M682.
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Son, O., Cetiner, O. (2016). Effect of Chordwise Flexibility on Flapping Wing Aerodynamics. In: Segalini, A. (eds) Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015). Springer Proceedings in Physics, vol 185. Springer, Cham. https://doi.org/10.1007/978-3-319-30602-5_26
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DOI: https://doi.org/10.1007/978-3-319-30602-5_26
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