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Root Cutout Effects on the Aerodynamics of a Low-Aspect-Ratio Revolving Wing

Jardin, Thierry and David, Laurent Root Cutout Effects on the Aerodynamics of a Low-Aspect-Ratio Revolving Wing. (2017) AIAA Journal, vol. 55 (n° 8). pp. 2717-2726. ISSN 0001-1452

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Official URL: https://doi.org/10.2514/1.J054864

Abstract

Direct numerical simulations of the flow past a low-aspect-ratio revolving wing are performed. The wing undergoes an impulsively started 180 deg revolution about a vertical axis at angles of attack 15, 30, and 45 deg and chord-based Reynolds number 1000. The root cutout is varied at a fixed wing radius, R=4 chords, and the effects on the flow structure and aerodynamic performance of the wing are evaluated. It is shown that an optimum in aerodynamic efficiency exists at low root cutout. Results suggest that this optimum is due to the competition between low Reynolds number effects at the wing root and root vortex effects. In addition, it is shown that a large root cutout can inhibit leading-edge vortex burst that occurs at high angles of attack. However, despite the associated recovery in pressure forces near the wing tip, this inhibition has no significant impact on aerodynamic performance.

Item Type:Article
Additional Information:Thanks to AIAA editor. The definitive version is available at : https://arc.aiaa.org/doi/abs/10.2514/1.J054864
HAL Id:hal-01657108
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Ecole Nationale Supérieure de Mécanique et d'Aérotechnique - ENSMA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Université de Poitiers (FRANCE)
Laboratory name:
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Deposited By: Thierry Jardin
Deposited On:06 Dec 2017 12:21

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