Research on Flow-Induced Vibration and Energy Harvesting of Three Circular Cylinders with Roughness Strips in Tandem
作者： Lin Ding , Qunfeng Zou , Li Zhang , Haibo Wang
DOI: 10.3390/EN11112977
关键词:
摘要: The flow-induced vibration (FIV) of multiple cylinders is a common phenomenon in industry and nature. FIV energy harvesting three circular tandem are numerically studied by 2D-URANS simulations Reynolds number range 30,000 < Re 105,000. Simulation results match well with experiments the tested cases. Four branches clearly captured amplitude frequency ratio curves roughness, including initial branch vortex-induced (VIV), VIV upper branch, transition from to galloping, galloping. It shown that vortices downstream cylinder strongly disrupted modified upstream cylinder. third almost suppressed branch. 2P vortex pattern observed for first For = 90,000 regime, patterns second + 4S 2S, respectively. In galloping shear layer motion synchronization cylinder, maximum 2.8 D reached total converted power increases U * water both simulation experiment. cylinders, reaches up 85.26 W increase number. conversion efficiency stable higher than 35% starting region value 40.41% obtained when 40,000.
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