1 0 0 0 OA 噴霧スクリーンを用いた函館山山頂展望台における新イベントの提案
- 著者
- 中川 幸二 秋葉 機四郎 石塚 與喜雄
- 出版者
- 函館工業高等専門学校
- 雑誌
- 函館工業高等専門学校紀要 (ISSN:02865491)
- 巻号頁・発行日
- vol.45, pp.13-21, 2011
This study was to propose a replaceable event at night with low visibility on the observation deck of Mt. Hakodate. Two possibilities were studied. The first was to project a picture of night view on cloud. To check this possibility, flow distribution around Mt. Hakodate was studied by numerical simulation and water tunnel experiment. The result showed a very low possibility. The other was to project a picture such as night view on a water-sprayed screen. This experiment indicated that the screen has another utility besides as a part of fire prevention system.
1 0 0 0 OA はばたき水車の試み
- 著者
- 岩岸 知崇 中村 尚彦 本村 真治 中川 幸二
- 出版者
- 一般社団法人 日本機械学会
- 雑誌
- 日本機械学会論文集B編 (ISSN:18848346)
- 巻号頁・発行日
- vol.77, no.779, pp.1445-1456, 2011 (Released:2011-07-25)
- 参考文献数
- 7
A flapping water turbine is a kind of power generating machine which extracts mechanical energy from flowing water by swing of blade motion. In this study, we carried out numerical simulation of blade motion and experiment on river. In the simulation, we made numerical integration of momentum equation about roll angle and compared the result with experiment in water channel. The disagreement in roll angle between the simulation and the result of experiment were discussed by using analytical model and basic data of blade fluid dynamic characteristics. The result of river experiment showed that flapping water turbine can extract energy from stream with rippling surface and turbulence.