Wind induced deformation and vibration of a Platanus acerifolia leaf
作者： Chuan-Ping Shao , Ye-Jun Chen , Jian-Zhong Lin
DOI: 10.1007/S10409-012-0074-Y
关键词: Physics 、 Lift (force) 、 Vortex 、 Meteorology 、 Reynolds number 、 Drag 、 Wind speed 、 Delta wing 、 Mechanics 、 Aerodynamics 、 Vibration
摘要: Deformation and vibration of twig-connected single leaf in wind is investigated experimentally. Results show that the Reynolds number based on speed length blade a key parameter to aerodynamic problem. In case front surface facing with an increase number, experiences static deformation, large amplitude low frequency sway, reconfiguration delta wing shape, flapping tips, high whole blade, recovery twig-leaf coupling vibration. Abrupt changes from one state another occur at critical numbers. back wind, sway does not occur, recovered shape replaced by conic numbers vibrations are higher than ones corresponding wind. A pair ram-horn vortex observed behind shaped leaf. found downstream lift induced vortex, this helps adjust position posture, stabilize distortion reduce drag
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