Review of flow control mechanisms of leading-edge vortices
نویسندگان
چکیده
منابع مشابه
Leading Edge Vortices
Leading-edge vortices that form at offdesign conditions can profoundly influence the aerodynamic characteristics of highly swept slender wings. predict wing geometry effects on the progressive spanwise development of leading-edge vortices is presented. This method, which can account for sweep, camber, twist, airfoil shape, flap deflections, and planform shape, is shown to be a useful tool for a...
متن کاملOn the stabilization of leading-edge vortices with spanwise flow
The influence of spanwise flow on the development and stabilization of leading-edge vortices (LEVs) on a foil (without rotational acceleration) has been investigated. The plunging swept wing/fin geometry used in this study, characteristic of fish-like tails, has been found to be insufficient in the stabilization of LEVs. Direct force measurements and visualizations, including Particle Image Vel...
متن کاملDual leading-edge vortices on flapping wings.
An experimental investigation was performed with two aims: (1) to clarify the existence of the dual leading-edge vortices (i.e. two vortices with the same sense of rotation located close to the leading edge above the leeward wing surface) observed on flapping wings in previous studies; (2) to study systematically the influences of kinematic and geometric parameters on such a vortical structure....
متن کاملThree-dimensional flow structures and evolution of the leading-edge vortices on a flapping wing.
Following the identification and confirmation of the substructures of the leading-edge vortex (LEV) system on flapping wings, it is apparent that the actual LEV structures could be more complex than had been estimated in previous investigations. In this experimental study, we reveal for the first time the detailed three-dimensional (3-D) flow structures and evolution of the LEVs on a flapping w...
متن کاملLeading-edge vortices elevate lift of autorotating plant seeds.
As they descend, the autorotating seeds of maples and some other trees generate unexpectedly high lift, but how they attain this elevated performance is unknown. To elucidate the mechanisms responsible, we measured the three-dimensional flow around dynamically scaled models of maple and hornbeam seeds. Our results indicate that these seeds attain high lift by generating a stable leading-edge vo...
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ژورنال
عنوان ژورنال: Progress in Aerospace Sciences
سال: 2007
ISSN: 0376-0421
DOI: 10.1016/j.paerosci.2007.08.001