Prospect of Micro Power Generation Utilizing VIV in Small Stream Based on Verification Experiments of Power Generation in Water Tunnel
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概要
- 論文の詳細を見る
The target of this research is to develop a micro electric power generator for a low cost small river monitoring device. Firstly, the power generation by vortex induced vibrations (VIVs), its performance coefficient and the optimum condition of the generator were estimated from energy balance analysis based on the assumption that VIVs can be regarded as a resonance oscillation of a linear system. Secondly, water tunnel experiments were carried out and it was confirmed that the trailing vortex induced vibration (TVIV) occurs on a cruciform circular-cylinder/strip-plate system over a velocity range about 15 times wider than that of Kármán vortex induced vibration (KVIV). Finally, power generation experiments were carried out utilizing TVIV. The generator circuit consists of coils mounted on the circular cylinder vibrated by TVIV and magnets fixed on rigid supports. The generator is shown to extract energy from the water flow in the same way as a viscous damper over the expected velocity range. Although the performance coefficient of TVIV electricity generation is lower than that of KVIV, it is more appropriate for natural rivers of which flow velocity changes greatly.
- 一般社団法人 日本機械学会の論文
著者
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Shirakashi Masataka
Department Of Mechanical Engineering Nagaoka University Of Technology
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Takahashi Tsutomu
Department Of Dermatology Kobe University School Of Medicine
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Yamada Shuichi
Department of Applied Chemistry, Faculty of Technology, Kanagawa University
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SEKIZAKI Takahiro
Research and Development Golf Department, YONEX CO., LTD.
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KOIDE Mizuyasu
Department of Mechanical Engineering, Fukushima National College of Technology
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