Self-excited flag vibrations produce post-stall flow control
نویسندگان
چکیده
A small flag attached to the surface of an airfoil near leading-edge exhibits self-excited oscillations when is set at a post-stall angle attack. The limit cycle between and freestream produce vortices periodically, resulting in remarkable increase maximum lift coefficient stall angle. There are strong similarities this passive flow control method, which relies on fluid-structure interactions, active methods producing enhancement.
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ژورنال
عنوان ژورنال: Physical review fluids
سال: 2021
ISSN: ['2469-9918', '2469-990X']
DOI: https://doi.org/10.1103/physrevfluids.6.l102701