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Time-resolved scanning tomography PIV measurements around a flapping wing

Abstract : The three-dimensional flow that develops around a finite flapping wing is investigated using a tomographic scanning PIV technique. The acquisition and correlation processes employed to achieve such measure- ments have been carefully validated. Issues regarding the relevant timescales of the flow and the spanwise space- resolution are addressed. Results obtained on a hovering flapping wing whose plunging phase is described by a rectilinear motion highlight the influence of the free end condition and the formation of the tip vortex on the leading edge vortices behavior, wing/wake interactions, and wake stabilization.
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Laurent David, Thierry Jardin, Patrick Braud, Alain Farcy. Time-resolved scanning tomography PIV measurements around a flapping wing. Experiments in Fluids, Springer Verlag (Germany), 2012, vol. 52 (n° 4), pp. 857-864. ⟨10.1007/s00348-011-1148-5⟩. ⟨hal-01132038⟩



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