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Coriolis effects enhance lift on revolving wings

Jardin, Thierry and David, Laurent Coriolis effects enhance lift on revolving wings. (2015) Physical Review E. 1-4. ISSN 1539-3755

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Official URL: http://dx.doi.org/10.1103/PhysRevE.91.031001

Abstract

At high angles of attack, an aircraft wing stalls. This dreaded event is characterized by the development of a leading edge vortex on the upper surface of the wing, followed by its shedding which causes a drastic drop in the aerodynamic lift. At similar angles of attack, the leading edge vortex on an insect wing or an autorotating seed membrane remains robustly attached, ensuring high sustained lift. What are the mechanisms responsible for both leading edge vortex attachment and high lift generation on revolving wings? We review the three main hypotheses that attempt to explain this specificity and, using direct numerical simulations of the Navier-Stokes equations, we show that the latter originates in Coriolis effects.

Item Type:Article
Additional Information:Thanks to American Physical Society editor. The original PDF of the article can be found at Physical Review E website: https://journals.aps.org/pre/
HAL Id:hal-01131328
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)
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Deposited By: Thierry Jardin
Deposited On:13 Mar 2015 12:58

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