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Trailing-edge dynamics of a morphing NACA0012 aileron at high Reynolds number by high-speed PIV

Scheller, Johannes and Chinaud, Maxime and Rouchon, Jean-François and Duhayon, Eric and Cazin, Sébastien and Marchal, Moise and Braza, Marianna Trailing-edge dynamics of a morphing NACA0012 aileron at high Reynolds number by high-speed PIV. (2015) Journal of Fluids and Structures, 55. 42-51. ISSN 0889-9746

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Official URL: http://dx.doi.org/10.1016/j.jfluidstructs.2014.12.012

Abstract

Particle image velocimetry (piv) measurements are made at the trailing edge of a piezoelectric actuated aileron in order to investigate the physical effect on the flow via high-frequency low-amplitude actuation at high Reynolds numbers. The measurements at different actuation frequencies show the modification of the primary frequency components of the flow with the actuation frequency. A statistical analysis reveals the reduction of the Reynolds stress components which increases with the actuation frequency. Proper orthogonal decomposition (pod) analysis shows the modification of the spatial modes illustrating the vortex breakdown in the shear-layer and the reduction of the temporal mode spectral energy depending on the actuation. It has been shown that a specific low amplitude actuation frequency produces a significant reduction of the predominant shear-layer frequency.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at www.sciencedirect.com/science/article/pii/S0889974615000158
Audience (journal):International peer-reviewed journal
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Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:25 May 2016 08:53

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