Skip to Main content Skip to Navigation
Journal articles

Dynamics of a hybrid morphing wing with active open loop vibrating trailing edge by Time-Resolved PIV and force measures

Abstract : A quantitative characterization of the effects obtained by high frequency-low amplitude trailing edge actuation is presented. Particle image velocimetry, pressure and aerodynamic forces measurements are carried out on a wing prototype equipped with shape memory alloys and trailing edge piezoelectric-actuators, allowing simultaneously high deformations (bending) in low frequency and higher-frequency vibrations. The effects of this hybrid morphing on the forces have been quantified and an optimal actuation range has been identified, able to increase lift and decrease drag. The present study focuses more specifically on the effects of the higher-frequency vibrations of the trailing edge region. This actuation allows manipulation of the wake turbulent structures. It has been shown that specific frequency and amplitude ranges achieved by the piezoelectric actuators are able to produce a breakdown of larger coherent eddies by means of upscale energy transfer from smaller-scale eddies in the near wake. It results a thinning of the shear layers and the wake's width, associated to reduction of the form drag, as well as a reduction of predominant frequency peaks of the shear-layer instability. These effects have been shown by means of frequency domain analysis and Proper Orthogonal Decomposition.
Document type :
Journal articles
Complete list of metadata

Cited literature [33 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01638290
Contributor : Open Archive Toulouse Archive Ouverte (oatao) Connect in order to contact the contributor
Submitted on : Monday, November 20, 2017 - 9:32:37 AM
Last modification on : Wednesday, November 3, 2021 - 7:26:44 AM
Long-term archiving on: : Wednesday, February 21, 2018 - 12:46:05 PM

File

Jodin_16095.pdf
Files produced by the author(s)

Identifiers

Citation

Gurvan Jodin, Valentina Motta, Johannes Scheller, Eric Duhayon, Carsten Döll, et al.. Dynamics of a hybrid morphing wing with active open loop vibrating trailing edge by Time-Resolved PIV and force measures. Journal of Fluids and Structures, Elsevier, 2017, vol. 74, pp. 263-290. ⟨10.1016/j.jfluidstructs.2017.06.015⟩. ⟨hal-01638290⟩

Share

Metrics

Les métriques sont temporairement indisponibles