Flow visualization in the wake of flapping-wing MAV ‘DelFly II’ in forward flight

Flow visualization in the wake of flapping-wing MAV ‘DelFly II’ in forward flight

Percin, M.
Eisma, H.E.
Van Oudheusden, B.W.
Remes, B.
Ruijsink, R.
De Wagter, C.

Aerospace Engineering

Aerodynamics, Wind Energy & Propulsion

2012-06-25

Time-resolved velocity field measurements in the wake of the flapping wings of the DelFly II Micro Aerial Vehicle (MAV) in forward flight configuration were obtained by Stereoscopic Particle Image Velocimetry (Stereo-PIV). The PIV measurements were performed at several spanwise planes in the wake of the flapping wings and at a high framing rate to allow a reconstruction of the temporal development of the three dimensional wake structures throughout the flapping cycle. The wake reconstruction was performed by interpolating between the measurement planes through a Kriging interpolation procedure. First, the general wake topology of the DelFly II model is described in conjunction with the behavior of the distinctive flow structures, in particular, tip vortex, trailing edge vortex, and root vortex. Second, the effect of reduced frequency is investigated by changing the flapping frequency. Comparison of the three dimensional wake structures for different cases of reduced frequency reveals major differences in both formation and interaction of vortical structures.

http://resolver.tudelft.nl/uuid:cacc778d-8c50-4517-adba-d39912506251

https://doi.org/10.2514/6.2012-2664

American Institute of Aeronautics and Astronautics (AIAA)

978-1-62410-185-4

30th AIAA Applied Aerodynamics Conference, New Orleans, USA, 25-28 June 2012; AIAA 2012-2664

Institutional Repository

conference paper

© 2012 Percin, M.