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Numerical investigation of frequency-amplitude effects of dynamic morphing for a high-lift configuration at high Reynolds number

Marouf, Abderahmane and Bmegaptche Tekap, Yannick and Simiriotis, Nikolaos and Tô, Jean-Baptiste and Rouchon, Jean-François and Hoarau, Yannick and Braza, Marianna Numerical investigation of frequency-amplitude effects of dynamic morphing for a high-lift configuration at high Reynolds number. (2019) International Journal of Numerical Methods for Heat & Fluid Flow, ahead-of-pri (ahead-of-p). ISSN 0961-5539

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Official URL: https://doi.org/10.1108/HFF-07-2019-0559

Abstract

Purpose : This study illustrates the morphing effects around a large-scale high-lift configuration of the Airbus A320 with two element airfoil-flap in the take-off position. The flow around the airfoil-flap and the near wake are analyzed in the static case and under time-dependent vibration of the flap trailing-edge known as the dynamic morphing. Design/methodology/approach : Experimental results obtained in the subsonic wind tunnel S1 of IMFT of a single wing are discussed with High-Fidelity numerical results obtained by using the NSMB (Navier-Stokes Multiblock) code with advanced turbulent modelling able to capture the predominant instabilities and coherent structure dynamics. An explanation of the dynamic time-dependent grid deformation is provided, which is used in the NSMB code to simulate the flap’s trailing-edge deformation in the morphing configuration. Finally, Power Spectral Density is performed to reveal the coherent wake structures and their modification due to the morphing. Finding : Frequency of vibration and amplitude of deformation effects are investigated for different morphing cases. Optimal morphing regions at a specific frequency and a slight deformation were able to attenuate the predominant natural shear-layer frequency and to considerably decrease the width of the von Kármán (vK) vortices with a simultaneous increase of aerodynamic performances. Originality/value : New concept of future morphed wings is proposed for a large scale A320 prototype at the take-off position. The dynamic morphing of the flap’s trailing-edge is simulated for a first time for high-lift two-element configuration. In addition, the wake analysis performed helped to show the turbulent structures according to the Organized Eddy Simulation model.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Nationale du Génie de l'Eau et de l'Environnement de Strasbourg - ENGEES (FRANCE)
Other partners > Hôpitaux universitaires de Strasbourg - HUS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut National de la Recherche en Informatique et en Automatique - INRIA (FRANCE)
Other partners > Institut National des Sciences Appliquées de Strasbourg - INSA (FRANCE)
Other partners > Telecom ParisTech (FRANCE)
Other partners > Université de Strasbourg - UNISTRA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:23 Mar 2020 15:23

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