Three-dimensional flow and load characteristics of flexible revolving wings at low Reynolds number

Date

2016-07-04

Author

Van De Meerendonk, Remco
Perçin, Mustafa
Van Oudheusden, Bas W.

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Increasing interest in the field of micro air vehicles has stimulated research activities regarding biological flapping-wing flight. An important characteristic of biological flapping-wing flight that is not commonly taken into account in mechanical model simulations is the influence of wing flexibility. This experimental study explores the flow field and fluid-dynamic loads generated by revolving low-aspect-ratio wings with different degree of chordwise flexibility at a Reynolds number of 10,000. The experimental campaign consisted of phase-locked tomographic particle image velocimetry (PIV) measurements complemented with simultaneous force measurements. The three-dimensional velocity fields are captured in three measurement volumes positioned side-by-side along the span of the wing for different phases of the revolving motion, generating a time-resolved volumetric velocity field data set. Subsequently, from the velocity data the pressure fields are reconstructed as well as the loads acting on the wing. In this study the link between the temporal evolution of the vortical structures and the associated pressure forces acting on the wing is investigated in detail.

Subject Keywords

Flapping wing, Unsteady aerodynamics, Vortex flows, Force/Pressure from PIV data

URI

https://hdl.handle.net/11511/76268

Conference Name

18th International Symposium on Applications of Laser Techniques to Fluid Mechanics (4-07 July 2016)

Collections

Department of Aerospace Engineering, Conference / Seminar

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Citation Formats

R. Van De Meerendonk, M. Perçin, and B. W. Van Oudheusden, “Three-dimensional flow and load characteristics of flexible revolving wings at low Reynolds number,” presented at the 18th International Symposium on Applications of Laser Techniques to Fluid Mechanics (4-07 July 2016), Lisbon, Portugal, 2016, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/76268.